How do I solve this error when trying to upload a file or saving it to a location.
Make sure that
EDITpermission in the SharePoint Doc Library to can upload files. or at least you have the below custom level permissions
- Open Items,
- Add Items,
- View Items and
- View Application Pages
Vistorsis not sufficient to upload a file.
If you made sure that your current user has the sufficient permission, so make sure that The login account is not your personal Microsoft account like outlook or live account.