This document explains how to fix “The server you are trying to access is using an authentication protocol not supported by this version of Office 2016/365/2013/2010″ has occurred if it is not working correctly or throwing an unexpected error while installalling or reinstalling office. This solution applies for Office Home, Office Personal, Office University, Office Academy, Office for business, Office Professional, Office Professional Plus, Office 365, Office 2013, and Office 2016.
The error generally occurs while installing Office, Upgrading office, Opening Office, launching Office, removing/uninstalling Microsoft office or while applying windows updates. This error applies to all Microsoft office Products (Word, Excel, PowerPoint, Outlook, OneNote, Access, Project, Publisher, Visio, Infopath) and the error generally occurs in Windows 10, Windows 8, Windows 8.1, Windows 7, Windows Vista, Windows XP and other Microsoft Windows Editions.
Symptoms of Error Code
- You will get an Error Message while opening/installing Ms Office. The error may look like “The server you are trying to access is using an authentication protocol not supported by this version of Office“.
- Slow down overall Windows speed
- MS Office Applications will stop.
Cause of the Error
- Corrupt Core Ms office files
- Internet connectivity issue
- System DLL files conflict
How to fix Error “The server you are trying to access is using an authentication protocol not supported by this version of Office” Has OccurredStep 1 Temporarily Disable any installed 3rd Party Antivirus:
Sometimes Antivirus/Malware/Adware programs mark Microsoft office installer files as Spam and block it from installing. Please refer your vendors’ website for disabling it temporarily. Once the installation is done you can activate it again.
Step 2 Check System Integrity:
1. Hold Windows Key + R. Run Dialogue Box will open up.
2. Type CMD and Click OK.
3. In command Prompt Copy following commands (Simply select the command and hold Ctrl+C and press Ctrl+V in command prompt)
The system will take some time to check. Let it run for a while. If it finds any issues in “system” integrity it will automatically fix it.
Note: You will need Administrator Access to Run the above command. Simply Right Click on cmd button and select “Run as Administrator”
You can contact our 24×7 customer support for any help during the whole process.
In most cases ‘the server you are trying to access is using an authentication protocol not supported by this version of Office’ error code should be resolved by following above steps. If however the issue still persists it means there is some critical issue with your system which needs to be fixed manually and is recommended to be done by an experienced Computer Technician.
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