The server you are trying to access is using an authentication protocol not supported by this version of Office

Hi Michael,

You may try these troubleshooting steps regarding the error you encountered:

1. Clear Windows Credential:
   • On the Control Panel, go to User Accounts > Credential Manager > Manage Windows Credentials.
   • Delete all MicrosoftOffice15/MicrosoftOffice16 credentials.
2. Open Word/Excel application then go to File > Accounts. Sign out the current account and then login the Office 365 account with a valid OneDrive for Business license.
3. Clear OneDrive for Business cache using Easy Fix Tool:
   • Download and install the Easy Fix tool on this article.

You can check this article for other troubleshooting steps.

Also, in syncing your SharePoint libraries to your computer, I suggest you use the OneDrive for Business Preview Build next generation sync client. To download and install the preview build, follow the steps on this link.

If you successfully installed the next generation sync client, when you click on the blue cloud icon on the system tray, it should display the same as below:

Thanks,

Mike

I have 150 teachers and 2500 students... if i were to give them that instruktion!! Microsoft have to step up!!

I uninstalled office 2016 and installed 2013 now it works fine, seems to be a problem with the combination of windows 10 pro and office 2016

please tell me you will fix it?

Michael

Hi Michael,

We apologized for the inconvenience that have caused you regarding this issue. OneDrive for Business should work with the version of your Windows, and you may need to follow the instructions given, as this may fix the error message you encountered when syncing OneDrive for Business to your local computer.

Also, you may follow my suggestion to install the Next generation sync client, as this can also be used to sync your SharePoint libraries to your local computer.

Thanks,

Mike

Hi Michael,

Do you have any update?

Regards,

Yoga

I have tryed all of the above.

I still get: "The server you are trying to access is using an authentication protocol not supported by this version of Office"

BUT OneDrive seems to syncronise??!!

So how do i get rid of the: "The server you are trying to access is using an authentication protocol not supported by this version of Office" error?

& I still have 150 teachers and 2500 students, I can't fix this for them & I can't give them this instruction!!

So an easyer fix please.

Michael

Hi Michael,

Please post back if you have any update when you are free. 

Regards,

Yoga

both of my onedrives are new OneDrive sync client.

the error came when i got a new pc with windows 10 & office 2016, first thing I do is to syncronise my onedrives as i use both of them frequently.

I then uninstalled office 2016 and installed 2013, this removed the error.

Today I took 2 freshly installed pc's the first one I started OneDrive for business first then OneDrive private, as soon as I logged on my private the error came, the second pc I started OneDrive private first then OneDrive for business... I have now waited 4 hours... NO error!! Looks like it depends on what OneDrive I log on first??!!

Does this make sense to you?

Regards Michael