Microsoft Teams Error Code caa70004

Anonymous
2020-05-06T21:22:12+00:00

Good day,

We seem to be having some trouble with Microsoft Teams authentication for some users on new computers that have been added to our internal domain. Currently this is only happening to users that are logging into the computer for the first time. We have now confirmed that it is happening on all versions of Windows 10 that we can test from 1809 to 1903. The O365 accounts and licensing are fine, each user can login to Teams web app and use the service just fine. This is unexpectedly only the Microsoft Teams software not working.

***Very importantly, we are never prompted for a password.***We enter the proper email address for the Office 365 user and click sign-in. After doing so we are greeted with the below screen, there is no attempt or request to authenticate. There are no credentials in the credential manager and we have cleared all others to be sure it is unrelated.

We were also able to find that when the computers are removed from the domain they can login but not when added to the domain. When the computer is added to the domain and even if put in an OU blocking all policies from AD it still gives the same error whether it is a domain or local user account. Additionally, it doesn't matter which user is attempting to authenticate. You get the same error message when you attempt a fake address as well as a valid address. This makes me believe that the authentication process doesn't even get to the point of actually authenticating the user before it fails inexplicably.

It is clear this is an issue with the forms based authentication and it appears to be bypassing that step for some reason that I can't understand that just started but only when the PC is attached to the domain. If I remove the device from the domain it immediately starts working and as I mentioned. All existing PCs we have running on the domain are working without issue but when we log a new user into the computer it doesn't work, whether that be a local or domain user.

The error is as follows and is in the screen capture below. The first portion changes every time an attempt is made but I included it for reference since it is shown in the capture.

desktop-029172fb-76ac-4134-a8b8-c7df6ca648a8 <this part of the message changes with every attempt>

Error code - caa70004

There's a more permanent way to sign in to Microsoft Teams. If you're having trouble completing the process, talk to your IT admin.

I can provide the logs but wasn't able to include them because of the character limit.

I am at a total loss, the only things I can seem to hint at with the errors but not with the error code is a potential issue with AD FS but we do not use AD FS internally and it isn't configured on the domain. All other Office applications such as Outlook will connect and are completely content with being on our domain but Teams will not work.

Your assistance with this matter is greatly appreciated.

Microsoft Teams | Microsoft Teams for business | Other

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  1. Anonymous
    2020-06-30T06:39:17+00:00

    Solutiuon for Team error caa70004 (might work for other errors) 

    Task Manager > End Task Teams & also close anyother open application using Internet Explorer

    Start IE > Tools Internet Options > Advanced > Reset - close IE no need to reboot computer ...... start Teams 

    We use 8x8 & Teams; I have been clearing the IE cache (above steps) - I still have not worked out why this happens even though my computer has been cleaned installed a month ago. It is something to do with the IE cache & happens randomly.

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  2. Anonymous
    2020-06-12T14:08:24+00:00

    I did find a solution myself on this issue and it was fortunately not as complicated as I anticipated.

    We simply added the Office 365 account into the users list of resources and it started to work 100% of the time.

    Click on the Start menu -> click on User (silhouette of person in left menu if no picture) -> click Change account settings then in the new window on the left menu click Access work or school.

    Simply click the + Connect option and login using your Office 365 credentials.

    Once done you will see the an account added and you can now attempt to open Teams again. It may request that you enter your email address again and then it should just log you in without needing to authenticate again since you have now connected to your online account.

    Not sure why this wasn't being done when logging into Teams but this fixed it for all of the users who were having the trouble in our environment.

    J.D. Jankowski

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  3. Anonymous
    2020-09-02T18:54:31+00:00

    What fixed the issue for me was going to Start -> type in "Internet Options" and going to Advanced Tab then Click Reset and check clear personal data etc.

    This is the only thing that fixed this exact Teams error code.  Nothing else worked... Not the cache deletion updating the version etc.

    Try it out!

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  4. Anonymous
    2020-06-12T01:47:24+00:00

    Post resetting my office password teams started showing the issue was receiving the same page 

    "run into a issue" with error code caa70004.

    Tried the following and it worked flawlessly, the inital mistake i was doing was that i was on VPN & company sign in page already.

    >>> ensure you are not on any vPN or company related production connection, keep it on simple internet connectivity.

    >>> clear the cache in all cache folders only

    %AppData%\Microsoft\teams\application cache\cache

    during the above ensure teams is not running, post clearing the cache start the teams on plain internet connectivity and then it shows the organisation sign in page post that it should work unless you have other underlying symptoms.

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  5. Anonymous
    2020-05-08T07:54:34+00:00

    Hi JDJankowski,

    Thank you for the log files. From the log, I found the error is related with WAM (Web Account Manager).

    In this scenario, please make sure the firewall, antivirus software, and Windows Defender don't block the following AAD WAM plug-in processes that engaged in token acquisition:

    • C:\Windows\SystemApps\Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy\Microsoft.AAD.BrokerPlugin.exe
    • C:\Windows\System32\backgroundTaskHost.exe

    Besides, you can try to reinstall the AAD WAM package to check if it helps. For your reference, see Fix authentication issues in Office applications when you try to connect to an Office 365 service.

    Regards,

    Marvin

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