Note: When you follow instructions provided by Microsoft, beware that “Connect-AzureAD” works only in Windows .net framework – i.e. PowerShell 5.1. if you try to run it in PowerShell 7 – you can get “Connect-AzureAD: One or more errors occurred. (Could not load type ‘System.Security.Cryptography.SHA256Cng’ from assembly ‘System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089’.)” Error. (check Connect-AzureAD Could not load type ‘System.Security.Cryptography.SHA256Cng’ from assembly)
Configuring Sensitivity Labels
Sensitivity labels are configured under Microsoft Purview (Compliance Center), Solutions, Information Protection. You’d need a global admin or “Compliance Administrator” or “Azure Information Protection Administrator” (?) role:
Since we are talking sensitivity labels for SharePoint Sites (not documents), we define label scope as “Groups and Sites”: “Configure privacy, access control, and other settings to protect labeled Teams, Microsoft 365 Groups, and SharePoint sites.”
Then we define which protection settings for groups and sites we should configure on the next steps: – Privacy and external user access settings – Control the level of access that internal and external users will have to labeled teams and Microsoft 365 Groups. – External sharing and conditional access settings – Control external sharing and configure Conditional Access settings to protect labeled SharePoint sites.
If we selected previously “Privacy and external user access settings” – now we need to select group/team privacy (These options apply to all Microsoft 365 Groups and teams, but not standalone sites). When applied, these settings will replace any existing privacy settings for the team or group. If the label is removed, users can change privacy settings again. You can also allow external user access – if group owner will be able to add guests:
Next step – define external sharing and conditional access settings. Specifically, if the content of the SharePoint site can be shared with Anyone (anonymously) or with authenticated users (new or existing) or no external sharing is allowed:
And you can either control the level of access users have from unmanaged devices or select an existing authentication context to enforce restrictions:
Configuring sensitivity labels policies
Sensitivity label policy is basically which label should be available to apply for what users and some other settings like – do users need to provide justification before removing a label or replacing it with one that has a lower-order number or – will users be required to apply labels and optionall the default label
View existing sensitivity labels
“Global reader” role allows view existing sensitivity labels configuration:
Wording would be a little different, but all aspects of the label configuration will be mentioned. E.g. when editing GUI says label scope is “Groups & sites”, read-only label summary defines Scope as “Site, UnifiedGroup”.
Gotchas
Site sensitivity label is applied to site collection only and cannot be applied to subsite (web object).
Applying sensitivity labels programmatically
To apply a label to a m365 group or Teams site with a group behind: MS Graph API support only Delegated permissions.
“Set-PnPSiteSensitivityLabel” works in the current site context. Description says “If the site does not have a Microsoft 365 Group behind it, it will set the label on the SharePoint Online site and will not require Microsoft Graph permissions and will work with both delegate as well as app only logins.” In fact (7/22/2022) app permissions are not working. This cmdlet can assign label to a standalone or a group-based site only with delegated permissions.
“Set-PnPTenantSite” allows you to remove or apply site sensitivity label to both standalone and group-based sites with app permissions. Furthermore, group and team settings respect this. I.e. if you apply label to a group-based site – group will pick this up.
Channel sites should inherit sensitivity label from root site. I’m not sure if it’s a bug but – when you create a team and select sensitivity label as part of team creation process – all the channel sites you create after (Private or Shared) will inherit sensitivity label immediately – when you apply sensitivity label to an existing team – with existing channel sites – in this case Private channel sites inherit team sensitivity label immediately, but with Shared channel sites it’s strange: GUI shows sensitivity label assigned, but site object model does not.
Q: What permission or role is required to get search Usage analytics reports A: To see Microsoft 365 Search and intelligence usage analytics reports you’d need “Global reader” or “Search editor” role.
Q: What permission or role is required to get access to Search Feedback under Microsoft 365 admin center – Settings – Search & intelligence – Insights – Feedback A: You’d need at least “Global reader” or “Search editor” role.
Every resource under Microsoft 365 (Microsoft Teams team, Microsoft 365 group or SharePoint site) must have an owner/owners. Otherwise to whom we communicate on any question – site/group permissions, membership, site/group/team retention policy, content classification etc. Who will be responsible for team/site/group content and configuration and who will provide access to this site for other users.
MS: A team in Microsoft Teams or a Microsoft 365 group and its related services can become ownerless if an owner’s account is deleted or disabled in Microsoft 365. Groups and teams require an owner to add or remove members and change group settings.
Recently Microsoft implemented a new feature: a policy that automatically asks the most active members of an ownerless group or team if they’ll accept ownership. Very important feature. TY Microsoft!
It is important because many other “governance” activities (e.g. permissions attestation, retention policies) rely on site/team ownership. I.e., before we notify site owner that the site is going to be deleted due to inactivity – we want an owner present.
That is how out-of-the-box notification email looks like:
The configuration via wizard is straightforward and intuitive, and Microsoft documented it well, but still we have some questions regarding the policy behavior.
Q: Is it about groups ownership or sites ownership? A: Group ownership and group-based sites ownership (teams, yammer etc.). Non-group based aka Standalone sites (e.g. communication) are not in scope of this feature/policy.
Q: Who can configure this policy? What kind of permissions required to create/update policy? A: Microsoft says “Manage Microsoft 365 groups” permissions required – e.g. admins with Global admin or Groups Admin roles required. “Teams administrator” or “SharePoint Administrator” cannot configure the policy.
Q: After the policy activated – who will receive notification? What exactly “most active members” mean? A: Microsoft only says “most active members” and does not disclose specific algorithm behind.
Q: How about group with no members? What if somebody created a group but did not add any members and then left? A: In this case the policy will not work – as there is nobody who can be notified. This kind of groups must be handled manually, as no owners no members does not mean nobody uses related SharePoint site. What if the group is public and hosts some valuable data?
Q: How do we know the group is ownerless? Only if owner has been deleted from AAD? What if an owner is just blocked or became unlicensed? A: For the policy Microsoft consider blocked or unlicensed users presented in the group owners list as valid users and still group owners; so the policy will not be triggered until the group owners list is empty.
Q: We have implemented Azure AD Settings “EnableGroupCreation” and “GroupCreationAllowedGroupId” (as per Microsoft: Manage who can create Microsoft 365 Groups), so not everyone can create m365 groups. Would this impact ownerless groups policy? In other words – if a user cannot create group – would this keep user from being assigned as a group owners? A: No. Microsoft’s Manage who can create Microsoft 365 Groups trick regulates groups creation only. Later – when a group is created – nothing prevents such user to be added as a group owner.
Q: I support a large Microsoft 365 environment and we already have hundreds and thousands of ownerless groups. I’m concerned how users might react and whether our helpdesk support teams are ready for new type of tickets etc. Implementing the policy in test/stage environment does not make much sense, since there are no really active users etc. So, can I test this policy in production – on real users, but pilot it within a small number of users or ownerless groups before applying to all groups in the environment. A: Yes, you can do a test or pilot implementation in production limiting the impacted users or groups. – if you need to limit users who will be getting notifications – e.g. a “pilot team” – during Step 1 “Notification Options” under “Specify who can receive ownership notifications” you can select “Allow only certain active members” and under “Specify security groups to allow members” you can select a security group – so only members from the specified security group will be sent ownership request. Microsoft 365 groups do not work here.
but be aware – if you choose this option – it is possible that Microsoft 365 groups might have more active members who are not the security group members. E.g. it might make sense to use this option for piloting – against a small number of isolated set of groups/members, but for not for phased implementation. If you have some specific requirements for group ownership – e.g. “only managers could be group owners” or “contractors cannot be group owners” – using security group to limit potential group owners would make sense.
Another option you can use for phased implementation or piloting the policy is to scope it down to a several selected m365 groups – use “Apply policy to” – “Specific groups” option:
NB! After all notifications are sent for a group – you will never ever get any more notifications for the same group. Even if you re-activate the policy or change policy parameters or whatever – it will not help. Once messages sent – it’s done for the group forever.
Q: How many groups I can specify if I select Apply policy to Specific groups option? Is there a maximum? A: Yes, there is a limit. You can specify no more than 50 groups.
Q: I know the policy is applied to Microsoft 365 groups only. But I have many standalone sites with no owners (no site collection administrators). How do I deal with ownerless SharePoint sites? A: Options are: manual intervention, PowerShell, 3-rd party tools – depending on your specific case. E.g. you can elevate some “Site Owners” SharePoint group members to site administrators. For modern sites – how about converting standalone sites to Microsoft 365 group-based sites (TBC – as at the moment it is not clear if it is possible)?
Q: What happens after one of the notified members accepts the ownership request? A: No more notifications will be sent for this group. But previously sent notifications will still be valid.
Q: What happens if several of the notified members accepts the ownership request? A: Only two first served basis. As per Microsoft, only two members can be assigned to group owners via the policy. When a group got two owners – invitation message actionable item for the rest will be converted from “Would you like to be a group owner?” to “MemberName1 and MemberName2 have already agreed to become group owners.” with no “Yes” and “No” actionable buttons.
NB! I have tested the policy one more time, and this time after first member accepted ownership – no other members were able to accept ownership. They got a message “Johan Lorenz has already agreed to become group owner”:
@Microsoft, any comments?
Q: What if admin assign owner to group? A: The group becomes not ownerless. Notification messages will not display invitation to become an owner anymore, and instead of “Would you like to be a group owner? – Yes or No buttons” it will be shown as “username has already agreed to become group owner.”:
Q: Can I customize an ownership notification? A: Yes, but – E-mail message body is limited to ~1040 characters – Policy does not provide any WYSIWYG rich text format options (but there are some tricks you can use to format it with headers, bold/italic, links, bullets/lists: more on email template format.)
Q: Can I use shared mailbox or security group or distribution list as a “send from” e-mail account? A: No. You can use only user or m365 group mailbox.
Q: Should “send from” user e-mail account be licensed with Exchange? A: TBD (but most likely no).
Q: What if a group become ownerless after policy is activated? A: Policy detects the group is ownerless and start sending notifications within 24 hour. Actually the policy was designed to prevent ownerless groups. So it is recommended to activate the policy once you get the tenant.
Q: We know, that if a user declined ownership once – he will not get any more emails on the same. Is that true for current policy or for any further policies activations? I.e. If the policy updated/re-activated – will it remember user’s decision or it all starts from scratch? A: TBD All the next incarnations of the policy will not trigger e-mail notification for the group if all notifications were sent earlier. I.e. in this case user will not receive any more notifications on the same group.
Q: If user declines ownership – does that mean that somebody else will start getting emails so “number of active members” configured stays the same? What if all “active members” choose “No” at week 1 – will the policy select other members or what? A: No. The policy will send notification to other initially selected members.
Q: If nobody accepted ownership – can we reconfigure the policy to sent more notifications – e.g. to wider range of active members or with more strict language in an e-mail template? A: Yes and No. Yes – if you e.g. specified 2 members and 6 weeks in the policy, and then after 3 weeks you want to increase number of members to notify to 10. But (it seems like it’s a bug) you have to deactivate the policy and activate it again with new parameters. No – if the policy’s specified number of notifications is expired. I.e. if all emails supposed to be sent are sent – no more emails will be generated for this group, even if you reconfigure or deactivate/activate the policy, so the group active members will not get any more notifications on the same group. Workaround: you can add a dummy account to group owners and then delete this dummy account from AAD, so groups become normal and then ownerless again.
Q: What if we specify emails should be sent for 5 weeks, but stop the policy after two weeks? And then we re-activate the policy. A: It is expected the policy will continue sending e-mail notifications until 5 emails sent.
Q: What if we specify 3 weeks in policy, but then re-configure the policy with 5 weeks specified and activate it again? A: tbc – not tested yet
Q: Is there a difference in the policy behavior when we reconfigure the policy or deactivate and then reconfigure the policy? A: Yes, at least – what I noticed so far: To update number of members to notify – if you just reconfig the policy – it pics up update but acts like there was no updates. So to actually update number of members to notify you need to deactivate the policy and activate it again with new parameters.
Q: What if we have more than 10,000 notifications to send? Will the policy drop some of them or all notifications will be send but next day? A: tbc – not tested yet
Q: Let say we have an ownerless group with 20 members. Let say we specified security group to limit user who will get invitations. And this security group includes only 6 users from the orphan group out of total 20. Microsoft says the policy will select the most active users. So the question is: will the policy select the most active users from the 20 orphaned group users and if the user in the security group – he/she will get an email? A: No. The policy will select the most active users only from these 6 users that included in the security group, ignoring 14 users, even if they were more active then these 6 selected.
Q: What happens after the policy expires? E.g. after all notifications are sent… A: Policy does not expires. If the policy is activated – it works. If all notifications are sent for the group – so yes, policy is done for this group. But if a new group became ownerless – policy will be triggered for this group again.
Q: If all the notifications are sent for the group – what are admin options to activate ownerless groups policy against this group? A: There are no “legal” options, but there is a workaround. You can add an owner to the group and then delete this account – so this way you make the group ownerless again – and the process would start from scratch, as for the policy this group will be a new ownerless group.
Some more findings:
User can forward invitation message, but recipient who is not a selected group member – will not see actionable “Yes” “No” buttons. Selected Group
If a public group does not have an owner – all requests to joint the team will be declined with “The team does not have an owner” message: (that means no new members, i.e. no new contributors, but read-only visitors access is sill available for everyone, as group is public):
Users can go to My Groups to see groups (Teams, Yammer communities and SharePoint Sites) they are members or owners of.
Proposal to be a group owner lasts forever. So if a user after some time finds an email that asks him “Would you like to be a group owner?” and clicks Yes – he/she will be a group owner, even if the policy is already updated or removed.
As per Microsoft, only first two members can accept the ownership of an ownerless group. No additional members are allowed to accept ownership. If either one or two members accept ownership, other members won’t receive further notifications.
Re-create (or re-activate) the ownerless group policy
You can de-activate the policy and then activate it again. Or you can reconfigure the policy. If you activated the policy again (or re-configured it), but emails are not sent – this might be an expected behavior. Let say you initially specified 3 weeks and 3 notification were sent to the most active ownerless groups members. That means no more emails will be generated for these groups.
De-activate the ownerless group policy
Just uncheck “When there’s no owner…”, and save it to stop the policy:
downside – you’d need to configure the policy from scratch – all previous settings are gone now
Track the ownerless group policy in action via Audit Log
How do I, as an Microsoft 365 administrator, know if the policy works or not, are the emails sent or not and how many (if any) users are accepted “Would you like to be a group owner?” invitation?
Microsoft 365 Audit Search under Microsoft Purview (Compliance center) should help.
(No-brainer) – means that the policy sent e-mail notification to some of the group members. Under “Members” property you can see list of notified users, and under ExtendedProperties – “FirstNotificationDate” and “NotificationChannel” (usually “Outlook”)
OwnerlessGroupNotificationResponse – “Responded to ownerless group notification”
Could have “ResponseType” as “AcceptOwnership” or “DeclineOwnership” under ExtendedProperties, as well as “OwnerCount”.
It seems like event is not added to the Audit log when a policy is created or updated.
Who can create Microsoft 365 Groups
It is possible to limit users – who can create Microsoft 365 Groups (please refer to Microsoft: Manage who can create Microsoft 365 Groups – there is a guide and PowerShell code sample). This might help to keep the environment under control – let say, “only managers can create groups”, or “contractor should not be able to create teams”.
Azure AD Directory Setting “GroupCreationAllowedGroupId” works only for creation. Later, when the group is create – it is possible to add to group as a group owner those who is not able to create group. But, if you want your tenant configuration consistent in terms “if a user cannot create a group – user cannot be a group owner” – consider using the same security group in policy’s notofication options “Specify who can recieve ownership notifications”
Issues
“Ownerless group policy configuration failed” error message.
And “Failure in configuring ownerless groups policy” and “Please try again.” – seems like a permissions issue. SharePoint admin, Teams admin or Group admin roles: cannot configure Ownerless Groups Policy. Global admin: yes, can configure Ownerless Microsoft 365 Groups Policy. What is the minimum role required? According to a recent update of the Microsoft’s article – “A Global administrator can create a policy…”. In my experience – groups admin can also configure the policy.
The remote endpoint returned an error (HTTP ‘500’). Please try again later
When a user clicks on a button “Yes” or “No” in a notification email, a message “The remote endpoint returned an error (HTTP ‘500’). Please try again later.” pops up:
We are unable to complete that action right now
Since around Feb 5 2025 users who want to accept group ownership and click Yes – get an error message “We are unable to complete that action right now.Please try again later.” Microsoft is aware of it. Waiting for a fix.
Microsoft recently implemented “Adaptive Scopes” for retention policies”. Before that we had to use “static” scopes only, i.e. we could apply the policy to all sites or to specific selected sites we had to choose manually. With adaptive scopes we can use rules like “This adaptive scope must include all sites with Site Url starts with A or Site name starts with A” and so on. And then we’d apply the retention policy to all the sites in this adaptive scope. This is nice, but actually site Url and site name does not have much to do with sites categorization for the retention policies. How can we implement sites classification to apply different policies to different sites categories? Luckily, when you configure adaptive scopes, you can use Refinable Strings, and refinable strings is something you can configure to have values from custom site properties. So finally we can assign specific value to custom site property and the site would fall under this or that retention policy based on the value we dynamically assigned to the site.
Wait until search crawler picked up you site property. Now you have a crawled property.
Search schema mapping
As you know, Refinable Strings are just pre-created by Microsoft refinable managed properties. So you can select one that is not used(*) and map it to crawled property. You can assign alias so you could easily identify what is the RefinableString55 about (but aliases do not work in advanced query).
(*) Notes
select one that is not used select one that is not used is an important, bacause if you select refinable string that is already taken at the some site level – there is a conflict. So before configuring pre-created refinable properties at tenant level – I’d recommend to get report on managed properties taken at sites levels. It would be good idea if you arrange with sites owners on properties ranges (e.g. from 00 to 99 – reserved for tenant use, from 100 to 199 – available at sites level search customizations). And/or you can – after getting report on managed properties taken at sites levels – reserve all unused managed properties by assigning aliases e.g. “this-property-55-is-reserved-by-admin-for-tenant-level-config”.
site custom script If site custom scripts are enabled (DenyAddAndCustomizePages = false), then site collection admin can change site properties. So if you do not want the property being altered at site level – ensure that noscript site property is enabled (DenyAddAndCustomizePages equals true)
If site custom scripts are disabled (DenyAddAndCustomizePages = true), then an admin must enable them before using “Set-PnPPropertyBagValue” cmdlet (then disable again). “Set-PnPAdaptiveScopeProperty” cmdlet handles this automatically.
If you configure Verticals Query at the tenant level – i.e., Microsoft 365 Administration -> Settings -> Search and intelligence -> Customizations -> Verticals then search results will be trimmed everywhere – SharePoint Landing Page, Office landing page (Office.com), Office App, Bing search (but not other sites).
Teams search will not be affected as from Teams you only search for teams content. Same for Onedrive and Yammer. Sites with site or hub search scope will not be affected too.
If you configure verticals at site level: Site Settings -> Microsoft Search -> Configure search settings -> Verticals and want this be in effect – ensure site search scope is set to site or hub scope. But in this case you will loose answers functionality.
Global search settings – like acronyms, bookmarks and verticals – works only at tenant level search or at site leve if the site search scope is set to tenant. If site search scope is site or hub – then site-level search verticals will apply (and no answers functionality will be possible).
If I get token with (Graph, MSAL, PnP) and use this token for (Graph API, SharePoint CSOM API, SharePoint REST API) matrix.
An App used in this tests has Sites.FullControl.All MS Graph API and SharePoint API permissions, as well as FullControl ACS based permissions to SharePoint (AppInv.aspx).
Published: May 1, 2022 Update from Mar 5, 2023: Microsoft confirmed this as valid solution. Update from May 20, 2024: still true Update from June 12, 2024: I have just found “ABP in Exchange Online“… Looking into it…
Scenario
You want specific users do not appear in Microsoft 365 SharePoint, Teams or Outlook search results. For instance, when user left company and the account is not deleted, but just disabled in Entra Id (Azure AD), so account is present and searchable. Or there are two accounts of the same person – main one and a secondary one – so you want secondary account is removed from org structure and search. Etc.
Solution
Set “ShowInAddressList” Azure AD User object property to false. It’s done using Az module, e.g. with PowerShell:
In many cases we do not need some accounts to appear in Microsoft 365 Search. Examples are:
a) secondary or admin accounts e.g. a person have several roles and several accounts under the same name, e.g. regular user: John Smith John.Smith@contoso.com administrative account: John Smith John.Smith.Admin@contoso.com b) role, shared or service accounts: marketing@contoso.com c) non-mail-enabled objects d) disabled accounts
Getting multiple search results for the same person might confuse users and even lead to miscommunication and broken processes.
There is a good article by Tania Menice (Microsoft): Exclude Users From Delve and SharePoint Online People Search with the latest updates explaining how it is done for classic search and stating that currently it is not possible for modern search, but Microsoft is working on it.
In short, the article says:
Set the profiles AD property msExchHideFromAddressLists to True or Yes,
Sync/wait, so finally SharePoint UPA service SPS-HideFromAddressLists property will be updated (as it is mapped to msExchHideFromAddressLists AD property)
Under SharePoint classic search – update query to: {searchboxquery} -“SPS-HideFromAddressLists”:1
It works perfect for classic search. The problem is it does not work as expected in modern Microsoft Search.
“People” vertical is not customizable so far. So we cannot change query in Microsoft 365 search to do the same trick. But… it seems like Microsoft is working on it so finally it should be done by some kind of ootb config.
Here is how different services or search entry points respect SPS-HideFromAddressLists SharePoint UPA property:
So only “People” vertical in Microsoft search does not respect SPS-HideFromAddressLists (msExchHideFromAddressLists).
(Modern) Microsoft 365 Search
What about cloud-based accounts (not synchronized from local AD)?
There is a configuration setting “Show in global address list” that does the same job. It’s under Microsoft 365 admin center -> Active Users -> User – Edit -> Mail -> Show in global address list:
And another configuration settings “Hide from global address list (GAL)” under Exchange Admin Center:
I tested behavior for different kind of accounts and here are results:
User Account
#1
#2
#3
#4
#5
Enabled
Yes
No
Yes
Yes
Yes
Licensed (E5)
No
Yes
Yes
Yes
Yes
m365 Admin Center: Show in Global Address List
n/a
No
No
Yes
No
Exchange Admin Center: Hide from global address list (GAL)
n/a
Yes
Yes
No
Yes
ShowInAddressList Entra Id property value
null
null
null
null
False
SPO UPA ‘SPS-HideFromAddressLists‘ value
False
False
False
False
True
Outlook Address List “All Users”
Shown
Office.com Search: Vertical “All”
Shown
Office.com Search: Vertical “People”
Shown
Shown
Shown
Shown
Bing Work Search: All/People verticals
Shown
Shown
Teams Search: “All” Vertical
Shown
Shown
Teams Search: “People” vertical
Shown
Shown
Shown
Shown
Microsoft 365 Profile card – Organization
Shown
Shown
Teams Profile card – Organization
Shown
Shown
Shown
Shown
Teams People Picker
Shown
Shown
Shown
Shown
SharePoint People Picker
Shown
Outlook People Picker:
Shown
* – some users can see changes after hours, for some it takes days
It seems confusing we have 4 properties responsible for the same:
“Show in Global Address List” under m365 Admin Center
“Hide from global address list (GAL)” under Exchange Admin Center
“ShowInAddressList” Azure AD User object property
“SPS-HideFromAddressLists” SharePoint User Profile property
Are these properties related to each other?
Let’s test it:
Action-Consequences (immediate reaction – minutes if not other mentioned)
“Show in Global Address List” under m365 Admin Center
“Hide from global address list (GAL)” under Exchange Admin Center
ShowInAddressList Azure AD User object property
SPS-HideFromAddressLists SharePoint User Profile property
New user created, license assigned
Yes
Off
null
False
Uncheck “Show in my organization address list” under Microsoft 365 admin center
No
On
after one minute: null after 24 hours: null
after one minute: False after 24 hours: False
Set “ShowInAddressList” Azure AD User object property to “True”
Yes
Off
True
False
Set “ShowInAddressList” Azure AD User object property to “False”
“Show in Global Address List” under m365 Admin Center and “Hide from global address list (GAL)” under Exchange Admin Center – same switch, i.e. if you change one – another is updated automatically Neither of them affect “ShowInAddressList” Azure AD User object property or “SPS-HideFromAddressLists” SharePoint User Profile property
“SPS-HideFromAddressLists” SharePoint User Profile property is not changeable. If you try to change the property value you get an error message: “Set-PnPUserProfileProperty : Property Not Editable: This property can not be modified.“
“ShowInAddressList” Azure AD User object property is editable and synchronized to “Show in Global Address List” under m365 Admin Center and “Hide from global address list (GAL)” under Exchange Admin Center, and also with “SPS-HideFromAddressLists” SharePoint User Profile property (takes minutes), but then search crawler must pick this change up (takes hours) to hide/show the user (this was tested and validated for cloud-born accounts only)
here Microsoft says: regarding showInAddressList – Do not use in Microsoft Graph. Manage this property through the Microsoft 365 admin center instead. Represents whether the user should be included in the Outlook global address list. See Known issue.
Known issue (Microsoft): showInAddressList property is out of sync with Microsoft Exchange. When querying users through Microsoft Graph, the showInAddressList property may not indicate the same status shown in Microsoft Exchange. We recommend you manage this functionality directly with Microsoft Exchange through the Microsoft 365 admin center and not to use this property in Microsoft Graph.
Disclaimer
I used and tested all cloud-born accounts only. I do not have on-prem AD, so If your users are synchronized from local AD – do your own research – is this property synced from some local AD property, and if so – set AD property instead.
Microsoft is constantly changing the product. So what I found out here now might differ with what you work with.
It’s a good idea to test/validate this solution in your non-prod environment and against test users in your prod environment.
Bottom line
Setting “ShowInAddressList” Azure AD User object property to “false” is the most effective way to hide user account from search, but it could be changed only with PowerShell:
Sites.Selected MS Graph API permissions were introduced by Microsoft in March 2021. One year later, in 2022 they added SharePoint Sites.Selected API permissions.
Why is this so important? Because MS Graph API for SharePoint is still limited and cannot cover all possible needs. I’d estimate: 90% of applications use SharePoint CSOM, so developers have to use AppInv.aspx to provide permissions for their applications to SharePoint API.
But from this moment – having SharePoint API permissions in MS Graph – in theory – we can fully rely on permissions provided in Azure and – in theory – this should allow us disable SharePoint-Apps only principal:
Meantime I’ll test providing SharePoint Sites.Selected API permissions via Graph API call.
(wip) Test set #1: Certificate vs Secret
DisableCustomAppAuthentication: $false (SP-app-only spns are enabled). All applications have “write” access provided to a specific site only. Connecting with Connect-PnPOnline and then test access with Get-PnPSite
App / Get-PnPSite
Secret
Certificate
ACS based (Azure+AppInv)
OK
The remote server returned an error: (401) Unauthorized.
MS Graph API Sites.Selected
The remote server returned an error: (403) Forbidden.
The remote server returned an error: (401) Unauthorized.
SharePoint API Sites.Selected
OK
OK
MS Graph API + SharePoint API Sites.Selected
Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
OK
App with no permissions
The remote server returned an error: (403) Forbidden
The remote server returned an error: (401) Unauthorized
(wip) Test set #2: Sites.Selected SharePoint vs MS Graph (secret)
DisableCustomAppAuthentication = $false (SP-app-only spns are enabled).
All applications have “write” access provided to a specific site only.
Using Client Secret (not a certificate)
Using PnP.PowerShell
Action/Via
SharePoint + MS Graph Sites.Selected “secret”
SharePoint Sites.Selected “secret”
MS Graph Sites.Selected “secret”
Connect-PnPOnline
WARNING: Connecting with Client Secret uses legacy authentication and provides limited functionality. We can for instance not execute requests towards the Microsoft Graph, which limits cmdlets related to Microsoft Teams, Microsoft Planner, Microsoft Flow and Microsoft 365 Groups.
WARNING: Connecting with Client Secret uses legacy authentication and provides limited functionality. We can for instance not execute requests towards the Microsoft Graph, which limits cmdlets related to Microsoft Teams, Microsoft Planner, Microsoft Flow and Microsoft 365 Groups.
WARNING: Connecting with Client Secret uses legacy authentication and provides limited functionality. We can for instance not execute requests towards the Microsoft Graph, which limits cmdlets related to Microsoft Teams, Microsoft Planner, Microsoft Flow and Microsoft 365 Groups.
Get-PnPSite
OK
OK
The remote server returned an error: (403) Forbidden.
Get-PnPList
OK
OK
Get-PnPListItem
OK
OK
Set-PnPSite
Attempted to perform an unauthorized operation.
Set-PnPList
Attempted to perform an unauthorized operation.
Set-PnPListItem
OK
OK
New-PnPList
Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
Add-PnPListItem
OK
(wip) Test set #3: Read vs Write vs FullControl
DisableCustomAppAuthentication = $false (SP-app-only spns are enabled). All applications have Sites.Selected SharePoint and MS Graph API permissions. Using Client Secret (not a certificate) Using PnP.PowerShell
Read
Write
FullControl
Connect-PnPOnline
WARNING: Connecting with Client Secret uses legacy authentication and provides limited functionality. We can for instance not execute requests towards the Microsoft Graph, which limits cmdlets related to Microsoft Teams, Microsoft Planner, Microsoft Flow and Microsoft 365 Groups.
WARNING: Connecting with Client Secret uses legacy authentication and provides limited functionality. We can for instance not execute requests towards the Microsoft Graph, which limits cmdlets related to Microsoft Teams, Microsoft Planner, Microsoft Flow and Microsoft 365 Groups.
WARNING: Connecting with Client Secret uses legacy authentication and provides limited functionality. We can for instance not execute requests towards the Microsoft Graph, which limits cmdlets related to Microsoft Teams, Microsoft Planner, Microsoft Flow and Microsoft 365 Groups.
Get-PnPSite
Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
Get-PnPList
Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
Get-PnPListItem
Set-PnPSite
Set-PnPList
Set-PnPListItem
New-PnPList
Add-PnPListItem
(wip) Test set #5: Certificate vs Secret
C#, SharePoint CSOM, PnP.Framework
Findings
PnP.PowerShell Get-, Grant-, Set- and Revoke-PnPAzureADAppSitePermission cmdlets require Azure App with MS Graph Sites.FullControl.All app permissions (otherwise it says “Access denied”) and authentication via certificate (otherwise it says “This cmdlet does not work with a ACS based connection towards SharePoint.”)
The same actions – managing permissions for the client app to the specific site collections – could be done via Microsoft Graph Sites Permissions API using just secret-based authentication.
If an azure app does not have Sites.Selected API permissions configured – “Grant-PnPAzureADAppSitePermission” works as expected – no error messages – the output is normal – as if Sites.Selected API permissions were configured in the app. The same for Get-, -Set and Revoke-. Permissions provided for the app to the site are not effective though: Connect-PnPOnline works well, but all other commands – starting from Get-PnPSite – returns “The remote server returned an error: (403) Forbidden.”
If an app have no permissions to SharePoint – “Connect-PnPOnline” works ok, but “Get-PnPSite” return an error: “The remote server returned an error: (403) Forbidden.”
Set-PnPAzureADAppSitePermission gives an error message “code”:”generalException”,”message”:”General exception while processing” if the site is not specified.
AppInv is not working?
Error: Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
