If File Explorer suddenly stopped opening even though it worked recently, use these steps depending on Windows version.
For Windows 11 and Windows 10 (basic checks):
- Check for updates
- Open Start > Settings > Windows Update (Windows 11) or Start > Settings > Update & Security > Windows Update (Windows 10).
- Select Check for updates, install anything offered, and restart the PC.
- Restart the device
- Even if no restart is requested, restart Windows to complete any pending updates and clear temporary issues.
If using Windows 10 and File Explorer still will not open:
- Optimize Advanced system settings
- On the taskbar, type control panel and open Control Panel.
- Go to System and Security > System > Advanced system settings.
- On the Advanced tab, under Performance, select Settings > Advanced.
- Ensure Adjust for best performance of is set to Programs.
- Under Virtual memory, select Change and make sure Automatically manage paging file sizes for all drives is selected.
- Select OK, then Apply, and restart the PC.
- Run Disk Cleanup
- Search for disk cleanup on the taskbar and open Disk Cleanup.
- Choose a drive, select OK, select the file types to delete (confirm nothing important is in the Recycle Bin), then select OK.
- Run the System Maintenance troubleshooter
- Open Control Panel.
- Set View by to Large icons or Small icons.
- Go to Troubleshooting > View all > System Maintenance.
- Select Next > Try troubleshooting as an administrator and review the results.
- Check for missing or corrupted system files
- Follow the guidance in Using System File Checker in Windows from the referenced article to scan and repair system files.
- Run Automatic Repair (Windows 10)
- Open Start > Settings > Update & Security.
- Select Recovery, then under Advanced startup, select Restart now.
- On Choose an option, select Troubleshoot > Advanced options > Startup Repair.
- Choose an account, enter the password, and let Automatic Repair run. The PC may restart during this process.
If File Explorer still does not work reliably after these steps, submit feedback through Feedback Hub so Microsoft can investigate.
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