My outlook and teams will not open.

Dear @Brayden Xuereb,

I sincerely apologize for the inconvenience you are experiencing. I understand how important it is to have Outlook and Teams working properly on your device.

Based on your description, since both applications are accessible via the web but not opening from the desktop, I would like to guide you through a few troubleshooting steps below:

Please kindly try these steps below and check if it works:

Step1. Fully close background processes

• Go to Task Manager
• End all processes related to Microsoft Teams, Outlook, and Office

Step 2. Clear cache

Completely quit Teams, clear the cache (%appdata%\Microsoft\Teams\Cache), then restart. Clear the Teams client cache - Microsoft Teams | Microsoft Learn 

Since both Teams & Outlook fail, shared auth cache may be corrupted.

1. Go to: C:\Users<YourUser>\AppData\Local\Microsoft
2. Delete folders:
   • IdentityCache
   • OneAuth

Step 3. Try opening Outlook in Safe Mode (if you are using Outlook Classic)

• Press Windows + R, type: outlook.exe /safe
• This helps determine if add-ins or configuration are causing the issue

Step 4. Reinstall Microsoft WebView2 Runtime

• Go to Control Panel > Programs and Features
• Uninstall Microsoft Edge WebView2 Runtime
• Restart your device
• Reinstall the latest version from Microsoft Download WebView2 Runtime

If WebView2 is broken, apps may not open at all

Step 5. Create a new Windows profile

If both apps still won’t open:

• Create a new local user account
• Sign in and install Teams/Outlook

For reference: Manage User Accounts in Windows

Step 6. Check your current Office 365 subscription

1. Visit this link: https://portal.office.com/account/?ref=Harmony
2. Once signed in, navigate to the Subscriptions section
3. There, you should be able to view details related to your active Office 365 plan.

Please provide a screenshot of your subscription details. It is possible that the desktop application license may have expired, which could be preventing you from using the app.

Note: Please note that our initial response does not always resolve the issue immediately. However, with your help and more detailed information, we can work together to find a solution.   

Please feel free to reply below if you have any update or further concern.  

Your understanding and co-operation are highly appreciated. Thank you for your precious time. Have a nice day!

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