Hi Patrick,
I have tested at my end and here are my test results:
1. If user signed in with the account which has permission to access, user can open this workbook and check the permissions without problem.
- If user try to open this workbook with another account, user will get error said this account doesn’t have permission to open it.
As you mentioned this issue only happens to specific users, I assume the possible reason is the credentials of the problematic user. You can suggest user follow these steps and check the result:
- Sign out all the account in Office application and quit application.
- Enter Credential Manager in search and Open it > Select Windows Credentials> Under the Generic Credentials, delete any items which are related to Microsoft Office.
- Restart PC and sign in with correct account, then try to open this workbook.
Please feel free to share the result with us after testing. Thanks for your cooperation.
Best Regards,
Ivy