Windows File Explorer Keeps Restarting or Freezing: The Taskbar Flickers and Folders Close

You open your documents folder — and a couple of seconds later the window closes, the taskbar vanishes for a moment and comes back. Or File Explorer freezes for a long time when you try to open a folder of photos, right-click a file or plug in a USB stick. Sometimes this happens dozens of times a day and makes working on the computer a misery. Let's look at why Windows File Explorer crashes and restarts and how to fix it without resorting to a reinstall.

Why so much depends on File Explorer

Windows File Explorer isn't just the window with your folders. The same process is responsible for the desktop, the taskbar, the Start menu in some versions, the notification area, the context menu and file thumbnails. So when it crashes, everything disappears at once — the taskbar, desktop icons and open folders — and Windows then restarts it automatically.

The main causes of crashes

Context-menu extensions

Archivers, antivirus programs, cloud clients and PDF and graphics software add their own items to the right-click menu. An outdated or incompatible extension can bring down File Explorer every time you right-click or open a folder.

Thumbnail and preview handlers

To show thumbnails of videos, PDFs, RAW photos or design files, File Explorer uses add-on modules. If one of them fails or a file is damaged, Explorer crashes when you open that particular folder.

A damaged thumbnail cache

Windows keeps thumbnails in a special database. If it becomes damaged, File Explorer may freeze on folders with lots of images.

Network drives and cloud folders

Disconnected network drives, unavailable NAS boxes and sync problems with OneDrive, Google Drive or Dropbox make File Explorer wait a long time for a response and "freeze".

Damaged system files

After a failed update, a power cut or a virus attack, the components File Explorer depends on can be damaged.

Drive problems

If File Explorer freezes when accessing particular files or folders, it can be a sign of bad sectors on the drive.

Malware

Some viruses inject themselves into the File Explorer process specifically to hide their activity, which makes it unstable.

How the problem shows itself

• The taskbar and desktop icons disappear and reappear.
• Folder windows close by themselves.
• Right-clicking a file causes a freeze or closes the window.
• A particular folder won't open or takes minutes to open.
• File Explorer stops responding when you plug in a USB stick or phone.
• Application errors for explorer.exe appear in the event log.

Why you shouldn't reinstall Windows straight away

In most cases File Explorer crashes because of one specific third-party program or damaged component. Reinstalling the system "cures" it, but you lose time reinstalling all your programs, and if the culprit is a program you need, the problem comes straight back once you install it. It's far more effective to find and remove the cause.

How a technician finds the culprit

The specialist analyses the error logs, which usually name the module that caused the crash, then disables third-party shell extensions one by one and checks which actions reproduce the problem. At the same time, the integrity of the system files, the drive's condition and the presence of malware are checked. The culprit is usually found within an hour or an hour and a half, after which it's updated, replaced with an alternative or removed.

How to reduce the risk in future

The fewer programs on the computer that hook into File Explorer, the more stable it is. One archiver is enough instead of three, and one cloud client — the one you actually use — instead of several. Keeping programs and Windows itself up to date closes most known conflicts, and a backup of important files spares you the stress if the problem turns out to involve the drive.

It also helps to pay attention to when the crashes started. If they began right after installing a particular program, plug-in or update, that's valuable information for the technician and often points straight to the cause, saving time on diagnosis.

What our technician does

1. Analyses the error logs and identifies the module that's crashing File Explorer.
2. Finds problem context-menu extensions and thumbnail handlers.
3. Clears the thumbnail cache and fixes problems with network drives and cloud folders.
4. Repairs damaged system files and checks the drive.
5. Removes malware and leaves the system in a stable state.

A real example

At an architecture practice in Vake, File Explorer crashed for two staff members every time they opened the projects folder, and the taskbar flickered several times an hour. The logs pointed to a preview module from an outdated drawings plug-in installed years ago. Our technician removed the old plug-in, installed a current free viewer with a compatible thumbnail module, cleared the thumbnail cache and disconnected an unavailable network drive left over from an old server. After that File Explorer ran stably, and folders with hundreds of drawings opened instantly.

Call a technician

If Windows File Explorer keeps crashing, freezing or restarting, we'll come to any district of Tbilisi around the clock. Learn more on our computer setup, computer diagnostics and virus removal pages.