Word - AutoSave issue with a specific OneDrive account

Hi guys,
I have 3 OneDrive accounts in my machine: personal account, work account and student account.
Whenever I work with a Word document using my student account AutoSave fails with "AUTOSAVE FAILED We have not been able to save your recent changes. Please save to a different file in order to keep all of your changes" if I hit the Save option manually, the file is saved without any issue. If I switch accounts and use my personal or my work account to edit a Word document with their respective OneDrive account, the Auto Save option works like a charme, so I think that my local installation is fine, but maybe some configuration in my Student OneDrive account is missing.

Any help would be very appreciated