Hi,Gio RISEPH
Welcome to Microsoft Community.
I understand that you are experiencing an error when uploading files in Office.
I noticed that you posted two threads and in another thread your OneDrive account was frozen.
May I ask if you are using the same Microsoft account for the issue in both threads? If so, then it is the OneDrive freeze that is causing your Office file uploads to fail.
If it is not the same account, then I need to ask you for more information: what type of account are you using, is it a business account or your private account, and do you have enough space in OneDrive? Is it the same when you change to another browser?
Please tell me more and I look forward to your reply.
Best Regards,
Mila.L-MSFT| Microsoft Community Support Specialist