How to get the ID (as opposed to the UPN) of a SharePoint user

Question

My question relates to the problem described on this page:

https://learn.microsoft.com/en-us/sharepoint/troubleshoot/sharing-and-permissions/fix-site-user-id-mismatch

The page refers to the "old ID" and the "new ID". Is there any way of getting these values? I'd like to use PowerShell to loop through all our SharePoint and OneDrive sites and delete all occurrences of the old ID while leaving all occurrences of the new ID in place.

Answer 1

Hi @Edward Jarvis ,

To fix these issues, run the Site User Mismatch diagnostic by using a Microsoft 365 administrator account (Global Admin or SharePoint Admin).

Site user id mismatch:https://aka.ms/PillarSiteUserIDMismatch

When the diagnostic detects a user ID mismatch in the UserInfo list, it will offer to remove the old ID. After you accept and the old ID is removed, assign the new user account the appropriate permissions to the SharePoint site.

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