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Windows 11 Update Stuck, Failed, or Broke Something? What to Do, in Order

By Justin · Woodstock Computer Repair · 2026-09-11

Windows updates cause more phone calls than viruses do. Three different complaints hide under “the update broke my computer,” and the right move depends on which one you have. Getting that wrong is how a stuck update turns into a real problem.

Which one is it?

• Stuck at a percentage. The screen says working on updates, the number has not moved in a long time.
• Fails and retries. Windows tries every night, fails, shows an error code with 0x in it, and tries again tomorrow. The computer works in between.
• Finished, and something is gone. The printer, the WiFi, a program, or the sound stopped working right after.
• “Undoing changes made to your computer.” The update failed partway and Windows is rolling back. This one has to finish. Interrupting a rollback is the one way to turn a bad night into a bench job.

Stuck at a percentage: the hardest part is waiting

Big feature updates can genuinely sit on one number for an hour, especially on an older drive. My rule of thumb: if the drive light is blinking at all, leave it. Give it two hours plugged in, lid open. If the number has not moved in two hours and the drive light is dead, hold the power button ten seconds to force it off. Windows is built to survive that and will roll back on its own. It is the interruption during “undoing changes” that causes damage, not a hard stop on a truly frozen update.

Fails and retries: three things to try before you call

1. Make room. A full drive is the single most common cause. Windows needs several gigabytes free to unpack an update and keep a copy of the old version to roll back to. Empty the recycle bin, clear Downloads, run Disk Cleanup. I wrote about this in the out of storage post.
2. Run the built-in troubleshooter. Search for Troubleshoot settings, then Windows Update. It resets the update service and clears a corrupted download more often than people expect.
3. Turn off the extra antivirus for one update cycle. Third-party security suites sometimes block the update from writing system files. Disable it, run the update, turn it back on. If that was it, the retry loop ends.

Finished, and something is gone

This is usually a driver Windows replaced with a newer generic one that does not work as well. The printer is the classic case, followed by WiFi cards and audio. The fix is not a new printer. In Device Manager, the device has a Roll Back Driver button that puts the working one back, or the manufacturer's own driver goes on top. For printers, Windows has a habit of quietly installing a basic driver with no scan function, which I covered in the prints but won't scan post.

If a program disappeared, it is almost always still installed. Search for it by name. Feature updates sometimes clear the Start menu pins and desktop shortcuts and leave the program itself alone.

What it usually turns out to be

• No room on the drive. The cause behind most retry loops.
• A corrupted update download. The troubleshooter, or clearing the download folder by hand, fixes it.
• Damaged system files. Windows has two built-in repair tools that check and replace them. This is the step after the troubleshooter and it takes a while, so it is often a house-call item.
• A drive that is starting to fail. Updates are the heaviest write a computer does all month. A drive that has been quietly developing bad sectors fails an update first. If the update loop comes with slowness or a blue screen, read the blue screen post, and back up before anything else.
• A machine that does not qualify. If the computer is on Windows 10 and the update in question is Windows 11 itself, it may simply not meet the requirements. That is a different conversation, in the Windows 10 post.

When it is a job, and what happens on a visit

If the free steps did not clear it, or the machine will not get past “undoing changes,” or a rollback was interrupted and Windows will not start, it is a job. On a visit I check the drive's health first, because everything else depends on it, then repair the system files, clear the update cache, and run the update while I am there so it finishes with someone watching. If Windows itself is damaged, a repair install keeps your files and programs and replaces only Windows. The Windows repair page describes the service; the pricing page shows how the visit works.

What I'd tell a neighbor

Never interrupt “undoing changes.” Give a stuck percentage two hours before you force it. If it fails every night, make room on the drive first. If it finished and took the printer, roll back the driver, do not buy a printer. And if updates have started failing on a machine that has also gotten slow, that is the drive talking, and it is time to back up and call.

Questions people ask

My Windows update has been stuck at the same percentage for an hour. What do I do?

If the drive light is still blinking, leave it; big updates can sit on one number for an hour on an older drive. If nothing has moved in two hours and the light is dead, hold the power button ten seconds. Windows will roll back on its own.

Why does Windows Update fail and retry every night?

Most often the drive is nearly full. Windows needs several gigabytes free to unpack an update and keep a rollback copy. After that, a corrupted download or third-party antivirus blocking the install.

The update finished and now my printer doesn't work. Do I need a new printer?

No. Windows replaced the driver with a generic one. In Device Manager, use Roll Back Driver, or reinstall the manufacturer's driver. The printer is fine.

Is it safe to turn the computer off during an update?

During 'undoing changes,' no; that rollback must finish. During a genuinely frozen update with no drive activity for two hours, yes, a hard power-off is what Windows is built to recover from.