Microsofe Team Bounces Out in Login Unable to enter.

Belle Chloe 0 Reputation points
2026-11-11T13:26:04.8833333+00:00

I can't log in to MS Team at all. When I press it, it bounces all the time.

Microsoft Teams | Microsoft Teams for business | Sign up and Sign in | Other
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  1. AI answer

    2026-11-11T13:26:19.1733333+00:00

    Try these steps in order:

    1. Check whether Teams works in the web app at https://teams.microsoft.com/. If the web app works but the desktop app keeps bouncing during sign-in, the issue is likely local to the Teams app.
    2. Sign out of Teams completely:
      • In Teams, select the profile picture at the top right.
      • Select Sign out.
      • Close Teams.
    3. Fully quit Teams before retrying:
      • On Windows, right-click the Teams icon in the taskbar or notification area and select Quit.
      • Reopen Teams and try signing in again.
    4. Clear the Teams cache.
      • Windows:
        • Quit Teams.
        • Open File Explorer.
        • Go to %appdata%\Microsoft\Teams.
        • Delete the contents of that folder.
        • Reopen Teams and sign in again.
      • Mac:
        • Quit Teams.
        • Delete ~/Library/Application Support/Microsoft/Teams.
        • Reopen Teams and sign in again.
      Note: Clearing the cache removes local Teams data such as thumbnails, local message history, display images, and add-ons, but it does not remove Teams from the device.
    5. Check date and time settings if a sign-in error code appears, especially 0xCAA20003:
      • Make sure the device date and time are correct.
      • Incorrect date and time can prevent connection to secure sites.
    6. If Teams shows a sign-in banner or keeps asking to sign in:
      • Select the Sign in banner or button.
      • Complete sign-in and any MFA prompt.
      • If the sign-in window does not open, quit and reopen Teams.
    7. If the problem started after a macOS 15.3 upgrade on a Mac with Company Portal installed, restart the Mac. That upgrade can disrupt Enterprise SSO for some users.
    8. If Teams still fails to sign in, uninstall and reinstall Teams. If possible, reinstall it as an administrator.
    9. If none of the above works, send the Teams sign-in status code to the IT admin. Some sign-in problems require admin action, especially when the app cannot complete authentication or keeps looping during sign-in.

    Common cases that need IT admin help:

    • 0xCAA20004: organization approval or Microsoft Entra ID policy issue
    • 0xCAA70004: proxy misconfiguration or network sniffing software
    • 0xCAA70007 / 0xCAA82EE2 / 0xCAA82EE7: network, firewall, timeout, or name resolution issue
    • 0xCAA90018: Windows sign-in credentials do not match Microsoft 365 credentials
    AI-generated content may be incorrect. Read our transparency notes for more information.

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  2. Kristen Tran 2,785 Reputation points Independent Advisor
    2026-11-11T14:01:00.2266667+00:00

    Hi Belle,

    The AI answer already provides several relevant troubleshooting suggestions. To help narrow down the cause, please first try signing in through the Teams on the web using an InPrivate or Incognito browser window.

    • If Teams works in the browser but not in the desktop app, the problem is likely limited to the local Teams application.
    • If the same issue occurs in both the browser and desktop app, it may be related to your account, network, or your organization’s sign-in policies.

    If you are using Windows, please try the following steps:

    1/ Completely close Teams

    Right-click the Teams icon in the Windows notification area near the clock, select Quit, and then restart your computer.

    2/ Repair or reset new Teams

    Go to Settings > Apps > Installed apps > Microsoft Teams > Advanced options.

    • Select Repair first. This attempts to fix the application without deleting its data.
    • If the problem continues, select Reset. Please note that resetting Teams deletes the app’s local data and personalization settings. After the reset is complete, reopen Teams and sign in again.
    • You can find the cache and reset instructions in Clear the Teams client cache.

    3/ Update or reinstall Teams

    If Teams still keeps opening and closing or repeatedly returning to the sign-in screen, uninstall Microsoft Teams, restart the computer, and then install the latest version again.

    If the issue persists, please let me know exactly what happens when Teams “bounces” and share any error message or status code displayed.

    Once you share these details, I can recommend the next steps that best match your situation.

    Best regards,

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