question

SamMFranklin-0920 avatar image
0 Votes"
SamMFranklin-0920 asked HensonAnthony-0018 edited

Microsoft Team Error CAA50021 - Resolution requested

Hi Team,

  Microsoft Team reports the following error on system running Windows 10 Pro.

  Error Code: CAA50021


  Resolution would be appreciated. 

Best Regards,
Sam

office-teams-windows-itpro
ms-teams-error.jpg (26.4 KiB)
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Do you find the solution for this issue?

If there is any news, please feel free to share with us.

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PrasharManojCS avatar image
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PrasharManojCS answered

Hi @SamMFranklin-0920

You can try to tweak the credentials or make sure using the right email address to login.

Tweak the credentials:

  1. In the Windows Search bar, open Credentials Manager.

  2. Under the ”Generic credentials” section, locate msteams_adalsso/adal_context_segments.

  3. Right-click and delete this generic credential.

  4. Restart your PC.





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SharonZhao-MSFT avatar image
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SharonZhao-MSFT answered SharonZhao-MSFT commented

Hi SamMFranklin-0920,

It seems related to Azure AD join and registration service.

We suggest you contact your admin to confirm if Mobile Device Management for Office 365 or Microsoft Intune services is enabled. If not, you may let admin login Azure AD admin login Azure AD admin center > Devices > Devices settings to check if “Users may register their devices with Azure AD” is enabled.


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@SamMFranklin-0920
You could try the solution provided by @Demetri-4250.
If there is any update, please feel free to drop us a note.

0 Votes 0 ·
Demetri-4250 avatar image
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Demetri-4250 answered FadhilatulAulia-7362 published

I had this issue for two days. I have several Microsoft accounts that I use and access for my business using a Surface. I completed the following steps to sign out of all my devices and no longer receive the Teams login error.


  1. Open Microsoft outlook and signed out of all accounts except for your primary account (the one you use to login to Teams with).

  2. Accessed my computer settings and selected "Accounts". Then I selected "Email & Accounts". Under the heading "Accounts used by other apps" I selected my primary account and clicked on "Manage". From there a separate webpage opens up (ttps://account.activedirectory.windowsazure.com/r/#/profile). On the right side of the webpage there is a link to "Sign out everywhere". Once you click on this link a message box pops up and requires confirmation that you want to sign out of all devices. I selected yes. I haven’t had an issues since. I hope this helps.





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I also got this error few days back. When I checked in Azure AD, the device was registered.
However when I checked from device side it said not connected to azure (dsregcmd /status in cmd).
Then went to Settings -> Accounts -> Access work or School
In there the Microsoft account is visible. above the account there is Connect option. In there you have two options to connect the device to Azure.
The issue did not came back again.
Hope this will help anybody

6 Votes 6 ·

It works, thanks!!! =)

1 Vote 1 ·
iRoberto-6793 avatar image iRoberto-6793 KaveendraUkwattage-2139 ·

OOOOOOOHHHH MY!!!
After searching all over for this problem where people suggested invasive solutions,
this actually worked seamlessly and it was so simple.

THANK YOU SO MUCH!

iR

1 Vote 1 ·
ElisabethEbert-4950 avatar image ElisabethEbert-4950 KaveendraUkwattage-2139 ·

Thank you so much! Great and easy to solve.

0 Votes 0 ·
FadhilatulAulia-7362 avatar image FadhilatulAulia-7362 KaveendraUkwattage-2139 ·

Thank you so much :)

0 Votes 0 ·
FadhilatulAulia-7362 avatar image FadhilatulAulia-7362 KaveendraUkwattage-2139 ·

Thank you so much :)

0 Votes 0 ·
ShaunSell-0435 avatar image
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ShaunSell-0435 answered

Had this issue where even office doesn't work anymore. Fix for me was to redo the windows account.

Steps:
Removed user under user accounts on control panel
Removed the Profile list under registry
restarted and added ad user again to computer accounts with administrator rights as before
logged in to the account and was able to activate office and login to teams without issues.

Hope this helps.

PS. I didn't get the root of the problem just a quick fix

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DerekWebber-7123 avatar image
2 Votes"
DerekWebber-7123 answered HensonAnthony-0018 edited

Have you tried re-registering the device with Azure AD?

On the device run this cmd as admin

dsregcmd /debug /leave

Reboot

dsregcmd /status

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Thanks, this seems to have resolved the issue. I had to re-add the users microsoft account after rebooting but they no longer had errors when trying to log into teams and outlook.

1 Vote 1 ·

Solution and likely root cause.

The above solution worked for me as well!

@DerekWebber-7123 Thank you!

**> On the device run this cmd as admin

dsregcmd /debug /leave

Reboot

dsregcmd /status**

The machine will need to become Hybrid Joined to Azure again, which depending on your Azure Active Directory sync, can take a while depending on scheduling or bulk of the scheduled sync.

Possible Root cause
Based on my research of the issue, the root cause seems to be a very recent security patch, I have not verified which one yet, but it was recent near the beginning of november. Possibly the October Security patch.

This is a concerning issue for me, and probably many.

Thank you for this collaboration!
Tony




1 Vote 1 ·