Windows Update Stuck Downloading or Won't Install? How to Unstick It

You go to install a Windows update and it just… sits there. Stuck at 0%, or 91%, or "100% complete" that never finishes; or it downloads, restarts, spends ages "Working on updates," then announces it's "Undoing changes" and dumps you back where you started — only to try again tomorrow. It's maddening, partly because the screen tells you almost nothing. The good news: a stuck or failing Windows Update is one of the most common problems we fix, it rarely means anything is wrong with your PC, and you can usually clear it yourself by working through a few steps in the right order.

The key is the order. Most people jump straight to drastic fixes; the steps below go from gentlest to most involved, and the early ones solve the majority of cases. Do them top to bottom and stop as soon as the update goes through. One reassurance up front: none of this erases your personal files — an update problem is a system-housekeeping problem, not a data problem.

First, make sure it's actually stuck — not just slow

Before you touch anything, give it genuine time. Big feature updates and some monthly cumulative updates can sit at a single percentage for a long while, and a progress bar that hasn't moved in ten minutes is not the same as stuck. Microsoft itself has noted that some 2026 updates download quickly but then take a long time to actually install, because the heavy work happens during the "installing" and post-restart phases — so the bar can look frozen while the PC is genuinely busy. A good rule: leave it alone for a solid hour, longer for a large update, before deciding it's truly hung. If the hard drive light is still flickering, it's probably working.

How do you tell? A real freeze is usually one that hasn't moved in well over an hour with no disk activity, or an update that repeatedly fails with an error code or rolls itself back every time. If you're at that point, don't pull the power in the middle of an install if you can avoid it — but if it's been hours on a restart screen with no activity at all, a forced restart (hold the power button ten seconds) is sometimes the only way out, and Windows is built to recover from it.

The five-minute basics that fix most of them

Start here, because these clear a surprising share of stuck updates. Restart the computer fully (Start > Power > Restart, not just closing the lid) and try the update again — a clean reboot often shakes loose a wedged download. Check your internet: an update that won't download may just be a flaky connection, so confirm other sites load, and if you're on spotty Wi-Fi, move closer to the router or use a cable for the duration.

Then unplug clutter. Microsoft specifically recommends removing external storage devices, drives, docks, and other hardware you don't need to start the PC, because an unfamiliar USB drive or dock can genuinely trip up a feature update. Leave only your keyboard, mouse, and monitor connected, then try again. Also make sure the laptop is plugged into power — Windows will refuse or pause some updates on battery.

Make sure you have enough free disk space

This is the single most overlooked cause, and a very common one on older or smaller laptops. Updates need room to download and unpack, and a nearly full drive will quietly stall the whole process. Microsoft's guidance is that a major upgrade needs at least 16 GB of free space for a 32-bit version of Windows, or 20 GB for 64-bit — and in practice you want a comfortable cushion beyond that, not the bare minimum.

Check your C: drive in Settings > System > Storage, and if it's tight, clear some room: empty the Recycle Bin, run the built-in cleanup (Settings > System > Storage > Temporary files, or Storage Sense), and offload big files you don't need on the system drive. Freeing up a few gigabytes is often all a "stuck" update needed. If your laptop's storage is chronically full, our guides on why a computer feels slow and on freeing up space are worth a read after you're patched.

Run the built-in Windows Update troubleshooter

Windows has a tool whose entire job is to reset the moving parts of the update system, and it fixes a lot of stuck updates without you typing a single command. On Windows 11, go to Settings > System > Troubleshoot > Other troubleshooters, find "Windows Update," and click Run (Windows 11 may launch this through the Get Help app, which is fine). On Windows 10 it's under Settings > Update & Security > Troubleshoot > Additional troubleshooters > Windows Update.

Let it run start to finish — it quietly stops the update services, clears some of the temporary state that gets corrupted, restarts the Background Intelligent Transfer Service (BITS) and the Windows Update service, and then has you check for updates again. It won't fix everything, but it's low-risk, takes a couple of minutes, and is the right step before anything more hands-on.

Pause, then resume — the trick that re-downloads a corrupt update

Here's a quietly effective one most people never try. If an update downloaded but won't install, or is stuck partway, a corrupted download is often the culprit — and you can force Windows to throw it away and fetch a fresh copy. Go to Settings > Windows Update, choose "Pause updates" for a week, restart the computer, then come back and select "Resume updates."

Pausing tells Windows to set the pending update aside; resuming makes it re-check and re-download from scratch, which sidesteps a half-broken file that was jamming the works. It's completely safe, takes under a minute of clicking, and is worth trying before you go near Command Prompt.

Clear the stuck update cache (the reliable deeper fix)

If it's still wedged, the heavy-duty fix is to clear the folder where Windows stockpiles update files, called SoftwareDistribution. When a download corrupts, Windows keeps trying to use the broken copy; wipe it and Windows rebuilds the folder and starts the download clean. This is the step that resolves the stubborn "fails every time" cases.

The safe way without the command line: open Services (press Windows key, type "services.msc," Enter), scroll to "Windows Update," right-click it and choose Stop. Then open File Explorer to C:\Windows\SoftwareDistribution\Download and delete everything inside that folder (you're deleting cached update files, not personal files — this is safe). Go back to Services, right-click "Windows Update" and choose Start, then check for updates again. If you're comfortable with an admin Command Prompt, the equivalent is stopping the wuauserv and bits services, renaming the SoftwareDistribution and catroot2 folders to .old, and starting the services back up — Windows recreates both folders fresh.

When the update itself is the problem (and you should just wait)

Sometimes nothing is wrong on your end — a specific monthly update is failing on a whole class of PCs, and Microsoft has to ship a fix. This happens a few times a year. A recent example: in spring 2026 a cumulative update failed on machines whose hidden EFI System Partition was too small, and Microsoft released a follow-up update to correct it rather than expecting users to fix it themselves. The tell is that the same update fails with the same error code no matter what you try.

When you suspect that, don't keep hammering it. Search the exact error code (for example "0x800f0922") plus "Windows update," and check Microsoft's Windows release health page, which lists known issues and whether a fix is on the way. If a problem update is the cause, the right move is usually to pause updates for a week or two and let the corrected version arrive — not to reinstall Windows over a bug Microsoft is already patching.

A real "update" never asks you to paste a command

One important detour, because the two get confused. If a full-screen page or pop-up appears in your web browser claiming to be a "Windows Update" and instructs you to press Windows+R, paste something, and hit Enter — that is not a Windows update, it's a scam designed to make you run malware on yourself. Genuine updates only ever come through Settings > Windows Update; Windows never delivers them through a website, a countdown, or a "verify you're human" box that wants you to paste a command. If that's what you're actually looking at, close the tab and read our guide on the fake-update "paste this command" scam instead — the steps on this page are for the real Settings updater that's genuinely stuck.

Still stuck? That's a normal time to call us

If you've given it time, run the troubleshooter, freed up space, paused-and-resumed, and cleared the cache and an update still won't go in — or it keeps failing with the same error and rolling back — that's a reasonable point to hand it off rather than risk a half-applied update. Persistent failures can point to deeper corruption in Windows' system files (repairable with tools like SFC and DISM, or in stubborn cases an in-place repair install that keeps your files and programs), or to a specific driver or piece of software blocking the update.

We fix stuck and failing Windows 11 and 10 updates all the time, across Southern California and the Coachella Valley, in person or by remote support — and we do it without wiping your machine or losing your files. Keeping a PC current matters for security, so if updates have been failing for weeks, it's worth sorting out properly.