How to Fix File Explorer Crashing or Running Slow in Windows

File Explorer keeps crashing, freezing, or loading slowly? Learn how to fix it by adjusting folder optimization, clearing history, and rebuilding the search index.

Published 2026-02-04 by TechNet New England

File Explorer is one of the most-used parts of Windows, so when it starts crashing, freezing, or taking forever to load folders, it disrupts everything. Common symptoms include the window going white and becoming unresponsive, the green loading bar crawling across the address bar, or File Explorer closing on its own without any error message.

These problems are usually caused by a few specific things, and most of them are easy to fix.

Fix 1: Change Folder Optimization to "General Items"

This is the most common cause of slow File Explorer that people don't know about. Windows tries to automatically detect what's in each folder and optimize the view for that content type (photos, videos, music, etc.). When it guesses wrong, especially on folders with mixed file types, it can make the folder extremely slow to load.

  1. Open File Explorer and navigate to the slow folder
  2. Right-click in an empty area and select "Properties" (or right-click the folder itself)
  3. Go to the "Customize" tab
  4. Under "Optimize this folder for," select "General items"
  5. Check the box for "Also apply this template to all subfolders"
  6. Click Apply, then OK

Do this for your Downloads folder, Documents folder, and any other folders that are slow. The Downloads folder is the most common offender because it usually contains a mix of every file type.

Fix 2: Clear File Explorer History

File Explorer keeps a history of recent files and frequently used folders. Over time, this can become bloated and cause slowdowns.

  1. Open File Explorer
  2. Click the three dots menu (...) in the toolbar and select "Options" (or go to View > Options in Windows 10)
  3. In the General tab, under Privacy, click "Clear" next to "Clear File Explorer history"
  4. While you're here, you can also uncheck "Show recently used files" and "Show frequently used folders" if you want a cleaner experience
  5. Click Apply, then OK

Fix 3: Disable Quick Access and Open to "This PC"

Quick Access is the default landing page when you open File Explorer. It dynamically loads recent files and pinned folders, which can cause hangs if any of those locations are on a slow or disconnected network drive.

  1. Open File Explorer Options (three dots > Options)
  2. In the General tab, change "Open File Explorer to" from "Quick Access" to "This PC"
  3. Click Apply, then OK

Fix 4: Restart File Explorer

If File Explorer is actively frozen right now, you can restart it without rebooting your computer.

  1. Press Ctrl + Shift + Esc to open Task Manager
  2. Find "Windows Explorer" in the process list
  3. Right-click it and select "Restart"

Your taskbar will briefly disappear and come back. All your Explorer windows will be closed, but any other programs will be unaffected.

Fix 5: Rebuild the Search Index

A corrupted search index can cause File Explorer to hang when it tries to display folder contents, especially if you have search indexing enabled for those folders.

  1. Open Settings > Privacy & Security > Searching Windows (or search for "Indexing Options" in the Control Panel)
  2. Click "Advanced" in the Indexing Options window
  3. Click "Rebuild" under Troubleshooting
  4. Click OK and wait for the rebuild to complete

Fix 6: Check for Problematic Shell Extensions

Third-party software sometimes adds shell extensions to File Explorer (right-click menu items, custom columns, icon overlays). When these extensions malfunction, they can cause crashes. Tools like ShellExView from NirSoft can help you identify and disable problematic extensions. Look for non-Microsoft entries and disable them one at a time to find the culprit.

If these steps don't resolve the issue, or if you'd like professional help, our team is here. Contact TechNet New England for IT support.