Add Site Collection Admin errors

The following sections show some common causes for this error, as well as possible solutions.

• If your azure domain does not end in ".onmicrosoft.com", follow the steps in Customized SharePoint homepage URL to allow collection manually.

Customized SharePoint homepage URL

FortiCASB's "Add Site Collection Admin" feature currently only supports the default azure domain format (abc.onmicrosoft.com).

If you have a custom SharePoint homepage URL, you will have to allow collection manually.

1. Go to Microsoft 365 Admin Center, click on show all in the navigation pane, then click SharePoint.



2. In SharePoint Admin Center navigation pane, click More features. Under User profiles, click Open.



3. In User Profiles , click Manage User Profiles.



4. Find the user, click on user account name, then select Manage site collection owners.



5. In the Site Collection Administrators box, enter your admin username, then click Ok.



FortiCASB can now audit this user's OneDrives. Repeat steps one through four for each user you wish to audit.