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SSO points in Phrase and Excel, however not Outlook



Unusual concern began a month in the past at a buyer web site. They use RDS with Workplace 365 put in. Traditionally this has been working high quality, then it randomly stopped signing in correctly for all customers. We will not level it right down to something particular nonetheless. Community / Consumer / Settings all look good.


What’s unusual is on first login to Outlook, it says it is achieved SSO however says unlicensed. A easy restart then would present it licensed. Now we have managed to work spherical that concern by saving the license folder appdatalocalmicrosoftoffice to the UPD. 

So for this, a month in the past, new and present customers would simply check in and it labored. Then one thing modified and customers had been being requested to check in each time. So we’ve made this transformation to incorporate appdatalocal to the UPD – now customers solely see this downside as soon as (a month). Whereas inferior to it was a month in the past, it’s acceptable.


Nevertheless, and that is what I need assistance with. SSO is NOT working in any respect from Phrase / Excel.

Open Phrase

Clean Micrsoft Signal In field pops up.

You need to kind username and hit enter

You then need to kind your password and hit Signal In

That popup then goes away, however on the tope proper of Phrase, it nonetheless reveals “Signal In”.

Whenever you go to Account, it nonetheless has a Register field.

BUT… in the event you now shut and reopen phrase, each of these present the signed in consumer.


The issue right here is that this does not persist over the UPD, so occurs each time the customers open Phrase or Excel. As that is utilized by a enterprise app to open docs, it is truly breaking the method and we have to repair this.


I’ve been taking a look at SSO information, as a result of it looks like one thing pretty low stage has modified with how this works, however cannot discover something useful, therefore posting right here after a few month of looking out and attempting issues.


It is not very useful when you will have MS hyperlinks like: 



run Distant Connectivity Analyzer to check SSO authentication

To run Distant Connectivity Analyzer to check SSO authentication, observe these steps:

  1. Open an internet browser, after which browse to


Nevertheless, that web page simply hangs with LOADING written on it. Then on the change notes for this web page we see that it was eliminated in 2022!


Model 4.0.15 (October 2022)

  • Eliminated the Single Signal-on Check now that primary authentication in Trade On-line is being disabled.


Fast notice on the setup. 

AD is synced to Entra utilizing Entra Join, newest model. SSO URLs are added to Web trusted websites as per setup directions. Community has been examined and all URLS accessible and dealing for the consumer. Consumer is on RDS on totally up to date Server 2016 and is on the most recent Workplace 365 app updates.


So I assume my first query is:


1) Does SSO nonetheless work for Phrase and Excel?

Is it a sensible expectation that the consumer will check in to the PC after which Phrase and Excel will routinely check in for the consumer (correct seamless single signal on) prefer it was doing solely a month or so in the past?


2) What can I do to check and troubleshoot this if it needs to be working?

I’ve been attempting for a month, so I’ve already tried numerous issues. However possibly I’m lacking some assessments?


Any information to assist get this working once more (or that it is not attainable and we missed that instruction from MS) can be excellent.


Thanks upfront




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