Outlook stop working

Question

Microsoft outlook stop working yesterday how do I fix it

Is there anyone out there?

Answer 1

Hi Tom Verdecchio

Thank you for reaching out to the Microsoft Q&A Forum! I understand how disruptive it is when Classic Outlook suddenly stops working.

To let me guide you better, could you please confirm:

• What type of account is this, Outlook.com/Hotmail or a third‑party provider (Gmail/Yahoo/custom domain)?
• When you try to open Outlook now, what exactly happens, do you see any exact error message? Does Outlook fail to open? Or does it open but freezes / says Not Responding?

In the meantime, please try the following steps:

1. Fully restart Outlook

• Close Outlook completely
• Press Ctrl + Shift + Esc to open Task Manager, find "Outlook" in the list, right-click it, and select End Task to ensure no background processes are still running. Or restart Windows first, then open Outlook.

2. Start Outlook in Safe Mode (rules out add-ins)

• Close Outlook completely
• Press Windows + R > type: outlook.exe /safe > press Enter
• If it's stable in Safe Mode, an add-in is the likely trigger. In that case, disable add-ins in normal mode and re-enable them one by one.
• Go to File > Options > Add‑ins > Manage: COM Add‑ins > Go…
  • Uncheck all unnecessary add‑ins, restart Outlook normally and re-enable one by one to find the culprit.

3. Test with Outlook Web

• Go to Outlook on the web
• Try signing in there to see if the issue persists

4. Check your internet connection or try a different network/ device

Make sure your device has a stable internet connection and try switching networks (e.g., from Wi-Fi to mobile hotspot) then test again.

For more details you can see this guide: Classic Outlook troubleshooters - Microsoft Support

Please let me know how it goes after trying these steps. Thank you for your time and understanding.

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Answer 2

If Microsoft Outlook has stopped working, you can try the following troubleshooting steps:

1. Restart Outlook: Sometimes, simply closing and reopening the application can resolve the issue.
2. Run the Microsoft Support and Recovery Assistant (SaRA): This tool can diagnose and fix many common Outlook issues. You can download it from the Microsoft website.
3. Create a New Outlook Profile:
   • Open Control Panel and click on Mail.
   • Click Show Profiles.
   • Select the profile you want to remove and click Remove (be cautious as this will remove associated data files).
   • Click Add to create a new profile and follow the prompts to set it up.
4. Repair Office Programs:
   • Exit any running Office programs.
   • Open Control Panel and go to Programs and Features.
   • Right-click on your Microsoft Office installation and select Repair.
5. Check for Updates: Ensure that your Office applications are updated to the latest version, as updates can fix bugs and improve performance.
6. Disable Add-ins: Sometimes, add-ins can cause Outlook to crash. Start Outlook in safe mode by typing Outlook.exe /safe in the Run dialog. If it works, disable add-ins from the File menu under Options > Add-Ins.
7. Check Antivirus Software: Ensure your antivirus software is up-to-date and not interfering with Outlook.

If these steps do not resolve the issue, you may need to consult further resources or support.

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References:

• How to troubleshoot issues that cause Outlook to crash or stop responding when used with Microsoft 365
• Outlook not responding error or Outlook freezes when you open a file or send mail