Microsoft Teams
A Microsoft customizable chat-based workspace.
9,122 questions
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so good！
Microsoft Team Error CAA50021 - Resolution requested
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(236.8, 41%, 32%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESM%3C/text%3E%3C/svg%3E)
Sam M Franklin
6
Reputation points
Hi Team,
Microsoft Team reports the following error on system running Windows 10 Pro.
Error Code: CAA50021
Resolution would be appreciated.
Best Regards,
Sam
Microsoft Teams
{count} vote
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Sharon Zhao-MSFT 25,056 Reputation points Microsoft Vendor2020-08-07T10:05:30.32+00:00 Do you find the solution for this issue?
If there is any news, please feel free to share with us.
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Stéphanie Lemejouk Sonfack 21 Reputation points2022-10-11T15:24:53.227+00:00 I encountered this same problem with one of my users for at least 2 weeks after enabling multi-factor authentication.
On Azure Ad Online, I noticed that the user was not attached, but I could see that the user's account had been added to the Microsoft accounts under E-mails and accounts and also Professional or School AccessHere are the steps I did:
1- open cmd in admin and type: dsregcmd /debug /leave
2- In the console https://admin.microsoft.com/, users, I selected the user and disconnected him from all sessions on the devices he was using
3- On his windows computer, I disconnected him again from office365 online and I deleted all his work accounts (on the computer)
4- Under the "Generic IDs" section, search for msteams_adalsso/adal_context_segments and right click and delete this generic ID.
5- Update the computer from 1809 to 21h2 and update the antivirus.
6- Restart the computer
7- Reconnexion of the user, everything works, there are no more errors. -
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dmc 0 Reputation points2023-10-07T03:34:25.0733333+00:00 I was able to FINALLY get 365 working again. After forcing a logoff FOR ALL my microsoft 365 accts (my COMPANY and my personal protonmail acct), that fixed my issue. I was able to get 365 working for my COMPANY acct again
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