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How to Fix Microsoft 365 Apps Closing Unexpectedly
Question details
Users are experiencing Microsoft Word and Access shutting down on their own when trying to launch or reopen the applications, even after performing a standard reinstall.
- Product
- Microsoft 365 / Office
- Device & OS
- Windows
- Scenario
- Launching or reopening Microsoft 365 applications like Word and Access.
- Observed behavior
- Word and Access close unexpectedly. Word may prompt a Safe Mode recovery message, while Access leaves a lock file and remains active in the Task Manager background processes.
Ensure you have a stable internet connection, as the Online Repair tool will need to download replacement files from Microsoft's servers to fix the corrupted applications.
Run an Online Repair for Microsoft 365
Use the built-in Windows repair tool to comprehensively fix your Office installation by downloading fresh files without needing to completely reinstall the operating system.
An Online Repair goes much deeper than a standard quick repair or a simple uninstall/reinstall cycle. It connects directly to Microsoft servers to evaluate and replace any missing or severely corrupted application files that cause the apps to crash on startup.
Click the Windows Start menu and select the Settings gear icon, or press the Windows Key + I on your keyboard.
Click on the 'Apps' category in the left sidebar, then select 'Installed apps' or 'Apps & features' depending on your Windows version.
Scroll through your app list to find 'Microsoft 365' or your specific Office version. Click the three horizontal dots next to it (or click the app name) and select 'Modify'.
In the repair dialog box that appears, select the 'Online Repair' option and click the 'Repair' button. Follow the on-screen prompts and wait for the process to download and install the necessary fixes.
Force Close Stuck Background Processes
Clear unresponsive instances of Access or Word stuck in the background to allow the applications to start normally.
Switch to WPS Office for a Stable, Crash-Free Experience
If Microsoft 365 continues to crash or requires frequent repairs, consider switching to WPS Office. It provides a lightweight, highly stable environment for all your document, spreadsheet, and presentation needs without heavy resource usage.
- 1. Download WPS Office: Visit the official WPS website and download the free, lightweight installation package.
- 2. Install the Suite: Run the installer and follow the quick setup process, which takes only a few moments.
- 3. Open Your Files Instantly: Launch WPS Office and directly open your existing Word, Excel, or PowerPoint files without losing any formatting.
Frequently Asked Questions
What is the difference between Quick Repair and Online Repair for Office?
Quick Repair fixes common issues quickly by replacing corrupted files locally without needing an internet connection. Online Repair takes longer because it connects to Microsoft servers to perform a comprehensive reinstall of all Office files, making it much more effective for severe crashes.
Will repairing Microsoft 365 delete my personal documents or emails?
No, running an Online Repair or Quick Repair only replaces the core application program files. Your personal documents, spreadsheets, databases, and Outlook emails remain perfectly safe.
Why does Microsoft Access leave a lock file (.laccdb) when it crashes?
When Access opens a database, it automatically creates a lock file to prevent multiple users from modifying the same record simultaneously. If Access closes unexpectedly, it fails to execute the command to delete this file, and the background process may stay temporarily active in the Task Manager.
Can a faulty add-in cause Word to close unexpectedly on startup?
Yes, incompatible or outdated third-party add-ins are a common cause of Office app crashes. Starting Word in Safe Mode helps determine if an add-in is the root cause by temporarily disabling all active extensions.
