Why has my taskbar, Start menu or File Explorer stopped responding?
The computer is running fine and its face has stopped working. Why the taskbar, the Start menu and File Explorer all fail together, the thirty-second fix that restarts them, and what to do when it keeps happening.
- Difficulty
- intermediate
- Time
- 20 min
- Read
- 6 min
Short answer
The taskbar, the Start menu and File Explorer are all one program, which is why they fail together and why restarting that program fixes all three. Open Task Manager with Ctrl-Shift-Escape, find Windows Explorer in the process list, and choose restart. The screen flashes, the desktop rebuilds, and nothing is lost. If it keeps happening, the usual causes are a shell add-on, a corrupted thumbnail or icon cache, or a network location the shell is waiting on.
This fault looks far worse than it is. The machine is working: music keeps playing, a download keeps downloading, an open document still accepts typing. What has stopped is the part of Windows that draws the desktop — and because that part is a single program that draws the taskbar, the Start menu, the notification area and every File Explorer window, all of them fail at the same moment. People reach for a restart, or worse for recovery options, when the correct response is to restart one program and carry on. It is worth knowing not only because it is quick, but because it saves the unsaved work that a hard restart would take with it.
Step by step
- Recognise the shape of the fault before doing anything.Taskbar missing, frozen or unclickable; Start menu opening to nothing or not opening; File Explorer windows hanging, closing on their own, or showing a black rectangle; right-click menus not appearing. If several of these are true at once, it is the shell rather than Windows, and the machine underneath is fine.
- Open Task Manager directly, not through the taskbar.Ctrl-Shift-Escape opens it without needing the taskbar or the Start menu, which is exactly why it is the key combination to remember. Ctrl-Alt-Delete and then choosing Task Manager also works when the first does nothing.
- Restart Windows Explorer rather than ending it.In the processes list, find Windows Explorer, select it, and use the restart option rather than end task. Restart stops and immediately starts it again. Ending it leaves you with a blank desktop and one more step to do, though that is recoverable — Task Manager can run a new task, and typing explorer starts it.
- Save anything open before you experiment further.Applications are unaffected by a shell restart, but if you are about to start turning things off it is worth using each program's own save command first. Reaching a program without a taskbar is easiest with Alt-Tab.
- If it recurs, suspect what has been added to the shell.Programs that add entries to right-click menus, preview handlers, cloud storage clients, archive tools, backup software and security suites all insert themselves into the shell, and a badly behaved one takes the whole thing down. Think about what was installed or updated around the time the trouble started — that is usually the answer and it is much quicker than any general repair.
- Clear the icon and thumbnail caches if the symptom involves pictures.The shell keeps a cache of icons and thumbnails so folders open quickly. A corrupted cache produces missing thumbnails, wrong icons, and Explorer hanging when it opens a picture folder. Windows' own disk cleanup tool can clear thumbnails, and the caches rebuild themselves. Nothing is lost.
- Look at what the shell is waiting for.Explorer hanging on opening rather than at random is usually a location it cannot reach: a mapped network drive that is offline, a disconnected external drive still pinned to quick access, or a cloud folder whose client has stalled. Disconnect the mapping or unpin the location and try again.
- Test in a second user account to separate the machine from the profile.Create a temporary local account and sign into it. If the shell behaves there, the fault is in your profile's settings and add-ons rather than in Windows, which narrows the problem enormously and rules out anything drastic.
- Only then consider the broader repairs.If a second account fails in the same way, this stops being a shell problem and becomes a Windows one. The catalogue's guides on undoing a change that broke a computer and on choosing a recovery option cover what to do next, in the right order and without jumping to a reinstall.
Common mistakes
- Holding the power button because the desktop is frozen — The computer is not frozen — only its interface is. A hard power-off loses unsaved work in every open program for no benefit, when restarting one process would have fixed it.
- Going straight to a reset or a reinstall — This fault is almost always one add-on or one cache. A reinstall costs a day and fixes it by accident, and the add-on gets reinstalled with everything else.
- Ending Windows Explorer rather than restarting it — It works, but it leaves you looking at a blank desktop wondering what you have done. Use the restart option.
- Assuming a slow-opening Explorer is a slow computer — A machine that is fast at everything else and slow to open folders is waiting on something, usually a network or cloud location. That is a completely different problem from a slow computer.
If it doesn't work
Taskbar there but nothing on it responds
Cause: The shell is running but stuck — Fix: Restart Windows Explorer from Task Manager. If it comes back and sticks again within minutes, an add-on is the likely cause.
Start menu opens and is completely empty
Cause: The Start menu's own data has become corrupted — Fix: Restart the shell first. If it persists, signing out and back in rebuilds much of it, and testing a second user account tells you whether the problem is your profile.
File Explorer closes itself whenever you open a particular folder
Cause: A preview or thumbnail handler failing on a file in it — Fix: Turn off the preview pane and switch that folder to a list view rather than large icons, then open it. If it survives, the culprit is a file the preview handler cannot cope with — often a video or an unusual image format.
Thumbnails are blank or show the wrong pictures
Cause: A corrupted thumbnail cache — Fix: Clear thumbnails with the disk cleanup tool and let them rebuild. This is safe and affects nothing but the cache.
Explorer takes a very long time to open every time
Cause: It is waiting on an unreachable location — Fix: Look at quick access and at any mapped drives for something offline. Set Explorer to open at This PC rather than quick access as a test.
Right-click menus take several seconds to appear
Cause: A shell extension responding slowly — Fix: The delay is one specific add-on. Removing recently installed archive, cloud or security tools one at a time identifies it faster than any general repair.
It happens on every account and after every restart
Cause: Not a shell problem — Fix: Move to the catalogue's recovery guides. A fault that survives a clean profile is in Windows or in the hardware, and the ladder there is the right one.
Questions people ask
Will restarting Windows Explorer lose my work?
No. It restarts the desktop interface only. Open programs, downloads, playing media and unsaved documents are untouched. The screen goes blank for a second or two while the desktop redraws.
Why do the taskbar, Start menu and File Explorer all fail together?
Because they are the same program. Windows draws the desktop, the taskbar, the Start menu and every file window from one process, so anything that stops it stops all of them at once. It also means one restart fixes all of them.
Is this a sign of a failing hard drive?
Usually not on its own. If it comes with other symptoms — long pauses, files that will not open, unusual noises from a mechanical drive — then read the catalogue's guide on drive failure warning signs and back up before doing anything else.
Does this happen on a Mac?
The equivalent exists — the Finder and the menu bar can stop responding independently of everything else — and the equivalent fix is to force the Finder to relaunch. The principle is the same: the interface is a program and it can be restarted without restarting the computer.