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I cannot sign in to Microsoft Teams using my personal Microsoft account. Both the web version and the desktop client fail to log in.

dora iatrou 0 Reputation points
2026-05-19T19:43:46.1033333+00:00

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I cannot sign in to Microsoft Teams using my personal Microsoft account. Both the web version and the desktop client fail to log in. My husband can login correct in my laptop with the same application .User's image

when I try to login again after him I receive the same error.

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  1. Chloe-V 8,260 Reputation points Microsoft External Staff Moderator
    2026-05-20T04:17:03.01+00:00

    Hi dora iatrou,

    Welcome to Microsoft Q&A forum. 

    Before we escalate further, please try the steps below to refresh the Teams sign-in state on your device.

    Please note that this is a user-to-user support forum. Moderators, contributors including external Microsoft employees cannot directly intervene in Microsoft product features or access back-end systems. Our role is limited to providing technical guidance on reported issues, requests, or ideas only.

    1 Repair / Reset the Microsoft Teams app (Windows)

    • Go to Start > Settings > Apps > Installed apps.
    • Search for Microsoft Teams > select … (More options) > Advanced options.
    • Select Repair first. If it still doesn’t work, select Reset (Reset clears app data and you may need to sign in again).

    2 Clear Teams cache

    Classic Teams (Windows):

    • Quit Teams completely (right-click Teams in the tray > Quit).
    • Press Win + R and open: %appdata%\Microsoft\Teams
    • Delete all files/folders inside that directory, then restart Teams.

    New Teams (Windows):

    • Option A: Use Reset from step (1).
    • Option B: Quit Teams > press Win + R and open: %userprofile%\appdata\local\Packages\MSTeams_8wekyb3d8bbwe\LocalCache\Microsoft\MSTeams
    • Delete all files/folders inside, then restart Teams.

    3 Test Teams on the web (Incognito + different browser)

    • Open an Incognito / InPrivate window and try signing in again.
    • If it still fails, try a different browser (e.g., Edge + Chrome + Firefox) and test again.

    Please feel free to let me know if you have any further updates, thanks.

    Since this is a public forum, we will hide your personal identifiable information, and I have sent that image of yours containing your personal identifiable information in a private message so we can work together to resolve the issue. Also, please check your private message in case you want to share another screenshot to avoid leaking your PII by click on the Private Message button as show below

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    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".  

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  2. dora iatrou 0 Reputation points
    2026-05-19T20:03:53.37+00:00

    It seams account issue pls assist how to fix it

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  3. dora iatrou 0 Reputation points
    2026-05-19T20:01:39.06+00:00

    please open a ticket to support, from the moment neither the web is not working is not application issue it is pure account issue .

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  4. dora iatrou 0 Reputation points
    2026-05-19T19:58:18.8533333+00:00

    No solution or resolve . There is no error code

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  5. AI answer

    2026-05-19T19:44:07.09+00:00

    The error shown in the screenshot is a generic “Something went wrong, please try again” sign‑in failure. Because the same Teams client and network work for another personal account on the same device, the problem is specific to this account’s sign‑in session rather than the app or PC.

    Use these steps to clear the existing sign‑in state and try again:

    1. Sign out everywhere
      • In the Teams desktop app, make sure the other account is fully signed out.
      • Close the Teams app completely.
    2. Clear the local Teams profile and reinstall
      • Uninstall Teams from Windows.
      • Browse to %appdata%\Microsoft and delete the Teams folder to remove cached sign‑in data.
      • Download and reinstall Teams, preferably by running the installer as an administrator.
      These are the recommended manual steps when sign‑in errors persist after basic checks.
    3. Try the web client again
      • After reinstalling, also test sign‑in using the Teams web client in a browser.
      • If the web client is stuck in a sign‑in loop or fails only there, follow the browser‑specific resolutions for “Microsoft Teams is stuck in a login loop.”
    4. If the error continues
      • Collect the error/status code that appears on the Teams sign‑in screen (bottom‑left of the window). This code helps identify whether the issue is related to authorization, network, or credentials.
      • If a status code from the documented list appears (for example, 0xCAA20003, 0xCAA90018, or a connectivity‑related 0xCAA7/0xCAA8 code), follow the corresponding troubleshooting action (correct date/time, verify credentials, or check Internet/firewall/proxy configuration with the network admin).
      • If the error persists after clearing the profile and reinstalling, and especially if no status code from the list appears, create a support request and provide the error code and debug logs so support can check the account and tenant side.

    Because another account works on the same device, there is no indication that a full Windows reinstall is required; focus on clearing the Teams cache/profile for this account and, if needed, having support review the account configuration.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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