The Cause:
Why does Outlook Crash with Microsoft 365?
It could be due to broken files, extra tools causing trouble, an old system, or not enough space on your computer. Sometimes, Outlook crashes after updates as well. Our job is to figure out what’s wrong and fix it, one step at a time.
The Solutions:
Fix Outlook Crashing When Used with Microsoft 365: Step-by-Step Instructions
Here are six simple methods to try. Ensure you have closed the Outlook application and Acting fast on it:
Method 1: Start Outlook in Safe Mode
Safe Mode runs Outlook without extra tools that might cause problems. Here’s how:
- Close Outlook, Press Windows + R and Type outlook.exe /safe and press Enter.
- Wait for Outlook to open. If it doesn’t crash, an extra tool is likely the issue.
- Go to File > Options > Add-ins, choose “COM Add-ins,” and click “Go.”
- Turn off one add-in, save, and restart Outlook normally. Repeat this until you find the problem one.
Method 2: Repair Microsoft 365
If Microsoft 365 has a problem, you can fix it with these steps:
- Close all Microsoft 365 programs.
- Open Control Panel, Go to Programs > Programs and Features.
- Find “Microsoft 365,” click it, and choose Change.
- Pick Quick Repair and click Repair. Wait until it’s done.
- Restart your computer and open Outlook to check.
- If it still crashes, repeat Steps 1-4, choose Online Repair, and follow the instructions.
Method 3: Update Windows
Keeping Windows updated helps it work well with Outlook and Microsoft 365.
- An old Windows system can cause Outlook to crash. Update it like this:
- Open Settings > Update and Security> Windows Update > Check for Updates
- If updates are found, install them and restart your computer.
- Open Outlook to see if this has fixed the Outlook crashing issue.
Also Read: Fix Outlook Crashes Caused By Updates and Configuration Errors
Method 4: Create a New Outlook Profile
If your Outlook settings are broken, a new profile can help:
- Close Outlook, go to Control Panel, and click Mail (search “Mail” if you can’t find it).
- Click Show Profiles.
- Click Add, give the new profile a name, and click OK.
- Add your email account when asked.
- In the Mail window, choose your new profile under “Always use this profile.”
- Click Apply and start Outlook.
Method 5: Turn Off Hardware Acceleration
Sometimes, graphics settings cause trouble. Turn them off with these steps:
- Open Outlook if you can, and go to File > Options.
- Click the Advanced tab, under the “Display,” check “Disable hardware graphics acceleration.”
- Click OK and restart Outlook.
Method 6: Check Your Disk Space
If your computer’s storage is full, Outlook might crash. Free up space like this:
- Open File Explorer (press Windows + E).
- Right-click your main drive (usually C:) and choose Properties.
- Look at “Free space.” You should have at least 10-20 GB free.
- If it’s low, click Disk Cleanup and remove old files or trash. Restart your computer and test Outlook.
If none of the above fixes work, don’t stress. Sometimes, the issue is deeper, like:
- Hidden corruption in the Outlook data file
- Profile-level sync issues with Microsoft 365 servers
Otherwise, the problem might be bigger—check with the pros and contact Microsoft support. A professional can help with that.
Why Crashes Happen on Different Computers
Crashes can depend on your setup:
- Old Computers: They might struggle with Microsoft 365.
- Internet Problems: A bad connection can stop syncing.
- Extra Tools: Add-ins can cause issues.
Conclusion
That’s it—a simple guide to fix Outlook crashes with Microsoft 365! It’s no fun when your email stops, but with these steps—Safe Mode, repairs, updates, and more—you can get it working again.







