The Problem
File Explorer closes when you open Downloads, freezes on This PC, or sits with Not responding in the title bar. Because explorer.exe is also the desktop shell, a crash can take the taskbar and wallpaper with it.
Only one application crashing? See app keeps crashing or won't open. Whole shell unstable? Also check Start menu not opening and taskbar not working.
Step 1: Note When It Crashes
The trigger tells you which fix applies, and it saves working through all seven.
| When it crashes | Likely cause | Go to | |---|---|---| | Right-clicking a file | Third-party shell extension | Step 5 | | Opening a specific folder | Thumbnail or preview handler | Steps 3 and 4 | | Opening This PC | Offline network drive or failing disk | Steps 6 and 7 | | On any window at all | System files or profile | Steps 2 and 8 | | Only with video or PDF files | Codec or preview handler | Step 4 |
Also check Event Viewer → Windows Logs → Application for an Application Error naming the faulting module. That .dll name often identifies the culprit outright—see use Event Viewer to find why your PC crashed.
Step 2: Restart Explorer and Repair System Files
Ctrl + Shift + Esc→ Windows Explorer → Restart.- Then, in Terminal (Admin):
DISM /Online /Cleanup-Image /RestoreHealth
sfc /scannow
- Install any pending Windows updates and restart.
Step 3: Clear File Explorer History
A broken Quick Access entry—usually pointing at a disconnected network share—crashes the window as it opens.
- Open File Explorer → ⋯ → Options → General tab.
- Set Open File Explorer to: This PC rather than Home or Quick access.
- On the same tab, under Privacy, untick both Show recently used files and Show frequently used folders, then click Clear.
If Explorer will not stay open long enough, rename this folder from Safe Mode or a command prompt:
%AppData%\Microsoft\Windows\Recent\AutomaticDestinations
Rename it to AutomaticDestinations.old—Windows rebuilds it.
Step 4: Turn Off Preview and Thumbnails
Preview handlers from PDF readers, codec packs, and old media tools are among the most common causes.
- In File Explorer: View → Show → untick Preview pane and Details pane.
- Then ⋯ → Options → View tab → tick Always show icons, never thumbnails.
- Test the folder that used to crash.
If that fixes it, uninstall the codec pack or PDF tool responsible, or leave thumbnails off for that folder type.
Clear the thumbnail cache while you are here—cleanmgr → tick Thumbnails.
Step 5: Find the Bad Shell Extension
Crashes on right-click are nearly always a third-party context-menu handler: archive tools, cloud sync clients, old antivirus, or GPU utilities.
- Download ShellExView from NirSoft, or use Autoruns → Explorer tab.
- Sort by company, and hide all Microsoft entries.
- Disable the non-Microsoft extensions in groups of five, restarting Explorer between tests.
- When the crash stops, re-enable them one at a time to identify the offender, then update or uninstall that application.
A quick test that avoids the tool entirely: restore the classic right-click menu forces Windows to load the legacy menu, which changes which handlers run.
Step 6: Disconnect Dead Network Drives
A mapped drive to an unreachable NAS or server makes Explorer wait 30 seconds or more on every window, which reads as a freeze.
- This PC → right-click each mapped drive → Disconnect for any you no longer use.
- Check for shortcuts in Quick Access pointing at unavailable shares and remove them.
Step 7: Check the Disk
Explorer hanging on C: or an external drive can be disk errors.
chkdsk C: /scan
For external drives: fix a corrupted USB or external drive. A nearly full C: also causes stalls: free up disk space. And check SMART data: check SSD or hard drive health.
Step 8: Reset Folder Views
When one type of folder always crashes—typically a folder Windows has decided contains pictures—the saved view settings are corrupt.
In Terminal (Admin):
reg delete "HKCU\Software\Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU" /f
reg delete "HKCU\Software\Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags" /f
Sign out and back in. You lose customised folder view settings, which is a small price.
Working Around It Meanwhile
Run a separate Explorer process that does not depend on the shell:
explorer /separate
That gives you a window to copy files with while the main shell is unstable.
Still Crashing?
Create a new local user account (Settings → Accounts → Other users) and test there.
- Stable in the new account → your profile is damaged. Migrate to it, or see fix "signed in with a temporary profile".
- Crashing there too → run an in-place repair install keeping files and apps: reinstall Windows without losing data.
Pause OneDrive as a test either way—fix OneDrive sync issues if Explorer hangs specifically on synced folders.
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