Windows 10 File Explorer Opening by Itself: Stopping Folder Windows From Popping Up

You are working in another program when a File Explorer window suddenly appears, sometimes again and again. When Windows 10 File Explorer opening by itself interrupts you, it can feel as though the PC slot online has a mind of its own.

Explorer windows open automatically when Windows detects a new drive, restores previous windows at sign-in, or receives a keyboard shortcut. A faulty USB device that connects and disconnects repeatedly can trigger new windows each time.

Cloud storage apps and certain malware can also open folders.

Noticing which folder opens is the biggest clue.

The windows may appear every few minutes, at sign-in, or whenever the PC wakes from sleep. Some users see the same folder open repeatedly, while others see different locations, and both patterns offer useful clues.

What Usually Triggers It

Windows open by themselves for these reasons:

• A USB device or memory card reader keeps reconnecting, triggering AutoPlay.
• “Restore previous folder windows at logon” is switched on.
• A stuck Windows key or a keyboard shortcut such as Windows + E is being pressed repeatedly.
• Cloud sync apps, scheduled tasks, or malware open folders.

If the window always shows the same drive, that drive or device is the cause.

A worn USB cable, a loose card reader inside a desktop case, or a phone that keeps switching between charging and file transfer can all reconnect many times an hour.

First Steps to Try

Check devices and settings.

1. Unplug USB drives, card readers, and phones, then watch whether the windows stop appearing.
2. Open Settings > Devices > AutoPlay and set removable drives and memory cards to “Take no action.”
3. Open File Explorer Options and untick “Restore previous folder windows at logon.”
4. Try a different keyboard in case a key is stuck.
5. Restart the PC.

If the windows stop after unplugging a device, test it on another PC or replace its cable.

Watch whether the Windows “device connected” sound plays just before each window appears. That sound strongly suggests a device is reconnecting.

If the Problem Continues

Look for software causes.

1. Pause OneDrive, Dropbox, or Google Drive and check whether the behaviour stops.
2. Open Task Manager’s Startup tab and disable unfamiliar entries.
3. Check Task Scheduler for tasks that run explorer.exe at intervals.
4. Run a full malware scan with Windows Security.
5. Update chipset and USB drivers.

If a new window appears each time OneDrive finishes syncing, check its settings for notification options and turn off any that open folders automatically.

Protect Your Data First

Use “Safely Remove Hardware” before unplugging storage devices. Be cautious when disabling startup items you do not recognise; search their names first.

The Bottom Line

File Explorer opening by itself is usually caused by reconnecting devices, AutoPlay, or restore settings. Unplug devices, change AutoPlay, and check startup software.

Making a note of the exact folder each time is the quickest way to find the cause, because each source of the problem tends to open its own location.