This error seems to happen in almost every Office 365 app, and it can be very stressful. This can, of course, lead to problems at work, keep you from finishing that school project, and so on.
This article will show you different solutions on how to fix this problem.
Sign out and sign in again
Log out of your Office 365 account, and then log back in like you normally would.
Even though this may seem like a silly way to fix the problem, some users have said it worked for them. Because this is an easy step to try, you should see what happens to your PC when you do it. This solution works because it sends a packet of information to the Microsoft servers, which refreshes the data transfer between the servers.
Please try the next method if this one doesn’t work.
Check your Windows Firewall and antivirus software
If you are using any antivirus, try turning it off temporarily and then try to sign in to your Microsoft Excel account.
This solution should fix your problem. If you can log into Excel normally after trying this solution, you may want to uninstall or update your antivirus.
Run an SFC Scan
Type cmd in your Windows search bar and select Run as Administrator.
Type sfc/scannow and press Enter.
Restart your PC.
Run a DISM Scan
Type Terminal on your Windows search bar and select Run as Administrator.
Copy and paste the following three commands one at a time and hit Enter after each:
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth
Restart your PC and check if the error is resolved. Proceed to next step if not.
Disconnect your account using Windows Settings
Press Win +I to open Settings .
Go to Accounts and select Access work or school.
Find your account in the list.
Click on it and select Disconnect from the list of options.
Restart your PC.