While attempting to access any Microsoft Office apps, you may get the server that does not sustain the error of authentication protocol. An error may occur using One Note app or on the OneDrive for the trade during the synchronization procedure. Many users have filed the same problems in the Community forum. A fix was introduced for the Click-to-Run version for business sync client. Keep on reading to follow the instructions for various troubleshooting tips. How to Fix Server Authentication Protocol Error Insert Office 365 Account If you want to insert Office 365 account, then you can follow the provided steps: Begin the Office application except for the one that you are facing issues with. So if you are facing a problem with OneDrive client. Launch MS Word Tap on File. Click on Account. Select the Switch Account option below the User Information menu. Choose the Add Account button. Insert the details for Office 365, which is linked with OneDrive for the work. Log o...