O365 keeps asking to sign in every day in RDS

Question

We have an RDS system in azure, with an AD trust to our customer domain.
They have office 365 licences, when they log in and run Word, they get asked to log in, which is fair enough. Once they log in they can use word.
If they quit word and use other apps then go back to word later, they are asked to log in again. Also they are asked to log in every day.
How can I get our system to remember their login? Or is this something that the O365 admin has to do?

Thanks
C

Answer 1

Hi CarDonBo,

The licensing token for Microsoft 365 is valid for 30 days. Do you use Single sign-on?
If not, after user login into RDS, go to %localappdata%\Microsoft\Office\16.0\Licensing folder, check the licensing token in the authString TXT file.

I also suggest you go to Credential Manager > Windows Credentials to remove credentials related to Microsoft 365.
Besides, go to Registry Editor, locate to Computer\HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity\Identities, and then delete Identities registry.
(Serious problems might occur if you modify the registry incorrectly. Before you modify it, back up the registry for restoration in case problems occur.
Please refer to this article about how to back up and restore the registry in Windows: https://support.microsoft.com/en-us/kb/322756)

Here are two similar threads you may have a look.

Office 365 User Login Prompts Continually Appear on Terminal Server
Office 365 on RDS keeps asking users to activate every logon