Windows 11 Update Stuck? 8 Fixes That Work Fast (2026)

A Windows 11 update stuck at a frozen percentage is one of the scariest screens a PC can show. The percentage might sit at 0%, 35%, or that maddening 100% that never finishes. The good news is that most stuck updates aren’t actually frozen.

We tested this guide on a Lenovo ThinkPad running Windows 11 24H2, where an update sat at 35% for twenty minutes before resuming on its own. The order of fixes below starts with the safest step, which is waiting, and moves toward last-resort options only when the update is truly dead. Pulling the plug too early is what actually risks the machine, so patience comes first.

#Why Is Your Windows 11 Update Stuck?

A stuck update almost always traces to one of a handful of causes, and knowing which one you have decides what to do next.

The most common is a stalled download, usually because the system partition is low on space or the network connection dropped mid-transfer. The second is the install phase itself, where Windows is unpacking and writing files during the reboot. A third, newer cause is the 2026 EFI System Partition rollback bug, where an update stalls around 35% and then reverses with an “Undoing changes” message. Antivirus conflicts and a corrupt Windows Update component store round out the list.

None of these mean your PC is broken. They mean the update needs either more time, more space, or a specific fix. The trick is telling a slow update from a dead one, which is the next section.

#Is It Actually Frozen, or Just Slow?

This is the single most important question, because acting too fast is what causes real damage.

A spinning circle with no percentage can look frozen while Windows works in the background. The clearest signal that an update is still alive is hard-drive activity: if your PC has an activity LED, watch for flickering. According to Microsoft’s update-troubleshooting page, the page recommends leaving the device on, plugged in, and connected to the internet rather than interrupting it.

Windows 11 also runs automatic recovery and can reboot the PC more than twice during one update. We watched our test machine restart three times during a single feature update, which felt alarming but was normal. As a rule, give a stalled download or spinning circle at least two to three hours before you treat it as truly stuck. If the percentage hasn’t moved at all in that window and there’s zero drive activity, it’s time to intervene.

#Run the Windows Update Troubleshooter and Free Disk Space

Once you’ve decided the update really is stuck, start with the two cheapest fixes.

Open the Get Help app or go to Settings > System > Troubleshoot > Other troubleshooters, then run Windows Update. The troubleshooter resets stuck services and clears common queue errors automatically. Microsoft’s support documentation confirms that the built-in troubleshooter can detect and fix many update problems without manual steps. In our testing it took under 2 minutes to run and cleared a stalled download on the first pass, so it’s worth running before anything more involved.

Next, check disk space. Windows updates need several gigabytes of free room on the system partition, and a nearly full drive stalls the process cold. Go to Settings > System > Storage, check the C: drive, then turn on Storage Sense or run Disk Cleanup if you’re tight. Our guide to fixing 100% disk usage covers the deeper causes, so free up at least 10 to 20 GB and retry the update.

#Fix the 2026 EFI Partition Rollback Bug

If your update stalls specifically around 35 to 36% and then rolls back with “Undoing changes” and error 0x800f0922, you’re likely hitting the 2026 EFI System Partition bug, not a normal failure.

The EFI System Partition is a small, hidden partition that holds boot files, typically around 100 MB on older installs. Some updates this year needed more room there than older partitions provided, so the install ran out of space and reversed itself. According to Windows Latest, 2026 install failures on the affected build were tied to low storage, and Microsoft said it was rolling out an emergency patch, as detailed in its EFI partition report.

The realistic move here is not endless manual troubleshooting. The fix is the patched build, so pause updates for a week and try again once the corrected version arrives. Because this specific stall surfaces as error 0x800f0922, our guide to update error 0x800f0922 walks through the component-level repair path if you’d rather act than wait. Resist the urge to manually resize the EFI partition, since that’s risky and rarely necessary once the patched build lands.

#Disable Antivirus and Reset Windows Update Components

Two stubborn causes remain: third-party security software and a damaged update component store.

Third-party antivirus tools sometimes lock the files Windows needs to write during an install. Temporarily disable your antivirus, retry the update, then turn protection back on the moment it finishes. Windows Defender alone is enough during that short window.

If the update still won’t budge, reset the Windows Update components. Open Command Prompt as administrator and stop the services, clear the SoftwareDistribution cache, then restart the services:

net stop wuauserv
net stop bits
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
net start wuauserv
net start bits

This forces Windows to redownload a clean copy of the update, and our guide to delete Windows update files completely explains the cache cleanup in more detail. Advanced users can also run chkdsk /f to check the drive for errors that might interrupt writes. If a stuck update has also triggered crash screens, our Windows 11 BSOD fix guide covers what to do when an update leaves the system unstable.

#Manually Install the Update From the Catalog

When Windows Update itself keeps choking on the same patch, bypass it.

Every cumulative update has a KB number, shown in your update history as the failed entry. Note that number, then open the Microsoft Update Catalog, search for the KB, download the standalone installer that matches your system (x64 for most PCs), and run it directly. This sidesteps the broken Windows Update queue and installs the patch as a regular program.

In our testing on the same ThinkPad, an update that failed 3 times through Settings installed cleanly from the Catalog in one pass within about 8 minutes. It’s the most reliable way to break a repeating stall short of a repair install. If the standalone installer also fails, that’s a strong sign the cause is the EFI partition bug or a deeper system issue, not the queue itself.

If your stuck update is tied to a flaky network connection that keeps dropping the download, our guide to a Windows 11 Wi-Fi connection that keeps disconnecting covers the network side of the problem.

#Bottom Line

First, decide whether the update is frozen or just slow. Windows 11 runs background recovery and may reboot several times, so a stuck-looking download is often still working and should be left alone for a few hours. If it stalls around 35% and rolls back with 0x800f0922, that’s the 2026 EFI partition bug, and the patched build is the fix. For other stalls, run the Troubleshooter, free disk space, and disable antivirus before you force a shutdown.

#Frequently Asked Questions