A Microsoft file hosting and synchronization service.
Dear IrN.S
Good day! Thank you for posting to Microsoft Community. We are happy to help you
First of all, I want to make sure if you have two accounts, which seem to be related to permissions, based on the error message you received. So I want to confirm if you are logged in to more than one account? If you are logged in to multiple accounts, check that OneDrive is logged in as a guest account.
If the account you mentioned is the same, you will need to contact the owner of the document library, usually the college's IT department, and ask them to see if your account exists in the document library's permissions.
We look forward to your reply. Thanks for your cooperation.
Sincerely,
Tin | Microsoft Community Moderator