How to Fix “Office 365 Keeps Crashing” Issue?

Margot Robbie | October 31st, 2025 | Office 365

Learn why Office 365 keeps crashing. In this blog, we’ll discuss simple and effective methods that will be helpful in solving the Office 365 freezing problem.

Office 365 is one of the most popular productivity suites used by millions of professionals and businesses worldwide. However, like other apps, it is not free from issues. One common issue users often face is that the Office 365 apps keep crashing or freezing unexpectedly. If you are encountering the same problem, then do not panic. In this article, we will provide step-by-step solutions to fix it.

Before diving into solutions, it’s important to understand the causes for Office 365 keep crashing.

Why Microsoft 365 Keeps Crashing?

  • Outdated Office installation
  • Incompatible Add-ins or plug-ins
  • Corrupted Office files
  • Poor or unstable internet connection
  • Outdated Windows operating systems
  • Conflicts with antivirus or third-party software

How to Fix the “Office 365 Keeps Crashing” Issue?

Here are some possible solutions to solve this problem.

1. Check Internet Connection

Network issues can sometimes stop Office 365 from working. Ensure you have a stable internet connection. If your internet connection is stable, proceed further and try the other given solutions to fix the issue.

2. Update Office 365

If you are using the outdated versions of Office apps, then it may cause many issues, including Office 365 keeps crashing. So, update it regularly.

  • Open any Office 365 apps
  • Go to File >> Account.
  • Click Update Options >> Update Now.

Once updated, restart your system and check if the problem persists.

3. Disable Add-ins and Extensions

Faulty add-ins can cause Office apps to crash frequently.

  • Press Windows + R and type outlook/safe or winword/safe and press Enter to open the app in Safe Mode.
  • If the app opens in safe mode without any issue, then a faulty add-in might be causing the problem.
  • Next, go to File >> Options >> Add-ins.
  • Click COM Add-ins and uncheck the check box of faulty add-ins and press OK.

Now, open the app normally to check if the issue is resolved or not.

4. Repair Microsoft Office

Corrupted Office files may lead to app crashes.

  • Open the Control Panel on your system.
  • Go to Programs >> Programs and Features.
  • Choose Microsoft Office 365 and click Change.
  • Select the Quick or Online Repair option and click the Repair button.

5. Check for Windows Updates

Outdated Windows system files can cause compatibility issues with Office 365.

  • Go to Settings >> Update & Security >> Windows Update.
  • Click Check for updates.
  • Install any pending updates and restart your system.

6. Create a New Office User Profile

Sometimes a corrupted user profile can trigger Office keeps crashing.

  • Open the Control Panel on your system.
  • Go to Mail >> Show Profiles.
  • Click Add to create a new profile.
  • Set it as the default and restart your Office app to check if the problem is solved or not.

Bonus Tip: Back up Office 365 to Secure Data

By applying the above solutions, you can resolve the issue of Office 365 crashing but frequent crashes can sometimes lead to data loss. So, it’s best to create a regular backup of your Office 365 account to protect your important emails, contacts, and other data. Advik Office 365 Backup Tool is a secure and reliable way to download emails to hard drive/pc/computer.

With this software, you can:

  • Export Office 365 to PST, MBOX, EML, etc.
  • Save the entire mailbox in a single attempt.
  • Allows you to choose specific emails or folders to backup.
  • Preserves data integrity and folder structure.

   

Conclusion

The Office 365 keeps crashing is a frustrating issue. With the solutions and tips we have explored in this guide, you can troubleshoot and resolve the issue effectively. However, if the Office 365 apps crashing persists even after applying all techniques, then contact Microsoft support for further assistance.