Teams will not open, It tries to open but closes, then does it again

Hello

Do you have Edge installed? If so, can you launch Edge (it has to be Edge, not Chrome), then see if you can sign into https://account.live.com/v2?

Dear @Cyrus Hosmer

Thank you for the detailed troubleshooting you’ve already tried. I completely understand how frustrating it is when Teams keeps opening and closing repeatedly. To better understand the issue and narrow down the root cause, could you please help confirm the following:​‌

• Does the same issue happen if you try using Teams on the web (browser)?
• Have you tried using other devices or other networks (different Wi-Fi or mobile hotspot)?
• Have there been any recent changes on the device, such as Windows updates, new software installed, or security/antivirus changes?
• Are you using any VPN or endpoint security tools?

Since you’ve already tried clearing credentials, cache, and reconnecting your account without success, the next step I recommend is repairing or reinstalling the Teams app, as the issue may be caused by a corrupted installation or missing components.

Step 1: Repair or reset the Teams app (Windows)

• Open Settings > Apps > Installed apps > Search for Microsoft Teams > Select More options > Advanced options > In Reset, select Repair first and test.
• If the issue persists, select Reset (note: this can delete local app data and require signing in again) > Start Teams again and check if it remains open.

Step 2: If repairing does not help, I suggest performing a clean reinstall of Teams.

• Uninstall Microsoft Teams by going to Settings > Apps > Installed apps > Search for Microsoft Teams > Select More options > Uninstall
• Restart the PC > Download and install the latest version. For reference: Download Microsoft Teams for Windows

Step 3: Create new Windows Profile

However, if the issue continues after repairing or reinstalling Teams, another useful step is to test with a new Windows user profile. This helps determine whether the problem is related to your current profile configuration. For more information and instruction, please follow this article: Manage User Accounts in Windows

Note: Please understand that as a forum moderator, my role is to provide general guidance and troubleshooting support. I don’t have access to internal systems or backend tools, and I appreciate your understanding of these limits.

I hope the information shared helps point you in the right direction. Please try the steps above and let me know if they work. If not, we can continue working together to narrow this down.

The first response may not always resolve the issue right away, but with your help and more details, we can work toward a solution.

Thank you for your patience and understanding. I'm looking forward for your reply.

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