Teams will not open

Hi Jim,

Thank you for reaching out. I’m sorry to hear you’re experiencing issues accessing Microsoft Teams.

Please try the following steps to troubleshoot:

1/ Test via web browser

Try signing in to Teams using Edge or Chrome https://teams.cloud.microsoft/, preferably in an InPrivate/Incognito window, to check if the issue is specific to the desktop app.

2/ Check for updates

Make sure your Teams app is up to date: Go to the three dots next to your profile picture > Settings > About Teams.

3/ Sign out and sign back in

Sign out of Teams and fully close the application.

• On Windows: Right-click the Teams icon in the taskbar and select Close window
• Reopen Teams and sign back in.

4/ Clear the Teams cache 

For Windows:  

• If Teams is still running, right-click the Teams icon on the taskbar and select Quit.  
• Press Windows + R to open the Run dialog box.  
• In the Run dialog box, enter the following path and click OK:   

 %userprofile%\appdata\local\Packages\MSTeams_8wekyb3d8bbwe\LocalCache\Microsoft\MSTeams    

• Delete all files and folders in this directory.  
• Restart Teams.  

For macOS:  

• If Teams is still running, right-click the Teams icon in the dock and select Quit, or press Command + Q.  
• Open Finder > go to Applications > Utilities > double-click Terminal.  
• Enter the following commands, pressing Return after each one:  

rm -rf ~/Library/Group Containers/UBF8T346G9.com.microsoft.teams     

rm -rf ~/Library/Containers/com.microsoft.teams2    

• Restart Teams.  

For reference: Clear the Teams client cache - Microsoft Teams | Microsoft Learn 

5/ Repair the Teams app (Windows) 

• Open Settings > Apps > Installed apps 
• Find Microsoft Teams 
• Click the three dots > Advanced options 
• Under Reset, click Repair 
• Reopen Teams 

6/ Contact your IT admin  

If the issue persists, please contact your IT administrator. They can further investigate or raise a support ticket via the Microsoft 365 Admin Center by following the steps here: Get support - Microsoft 365 admin | Microsoft Learn . 

If you’re unsure who your IT admin is, you can find guidance here: How do I find my Microsoft 365 admin? - Microsoft Support.  

Note: We appreciate your understanding regarding the scope of support available through this forum. As moderators, our role is to provide general guidance and assist with common troubleshooting steps. While we do not have access to internal systems or administrative tools required to resolve account-specific or backend-related issues but we’ll continue doing our best to support you within the scope of our responsibilities.  

I hope this helps you move forward. If you have any questions or need further clarification, please feel free to reach out. I’ll be happy to assist further.  

Thank you for your patience and understanding, and I look forward to supporting you.  

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