Windows 11 Update Failed: Read the Error Code and Fix It

When a Windows 11 update failed message appears, Windows has already rolled the update back and your files are untouched. The fix depends on why it failed, and Windows tells you that in the form of an error code. This guide shows where to find the code, what the common ones mean, and the repair steps that fix most failed updates on Windows 11 version 24H2 and 25H2, Home and Pro.

If an update is not failing but sitting at a percentage for hours, that is a different problem; see Windows 11 update stuck instead.

Before you start, back up anything important. None of the steps below deletes personal files, but a backup is cheap insurance whenever you repair Windows.

1. Find the failed update and its error code

1. Open Settings > Windows Update.
2. Select Update history.
3. Expand Quality updates, Driver updates and Other updates. A failed entry shows the update name with its KB number and a line such as “Failed to install on” a date, followed by an error code.

Write down the KB number and the code. Note which kind of update failed: a cumulative (quality) update, a driver, or a feature update to a new Windows version each have slightly different fixes.

2. What the common error codes mean

Microsoft’s support pages and its Learn list of common Windows Update errors describe these codes:

Error code	Likely cause	What to try
0x800f0922	Not enough disk space or a component problem	Free space, disconnect any VPN, run DISM and SFC
0x80070002	Update files missing or failed to install	Restart, run the troubleshooter, check disk space
0x8007000d	Corrupt downloaded update files	Clear the update cache and download again
0x800f081f, 0x800f0831, 0x80073701	Corruption in the Windows component store	Run DISM RestoreHealth, then SFC, then restart
0x80070005	Access denied	Sign in as an administrator; temporarily disable third-party antivirus
0x80070422	The Windows Update service is not running	Start the Windows Update service in services.msc
0xC1900101	A driver is incompatible with the update	Update or uninstall network and display drivers; disconnect extra hardware
0x80240034, 0x800705b4	Download stalled or timed out	Check the connection, restart, and try again

If your code is not listed, the steps below still apply in the same order.

3. Run the Windows Update troubleshooter

Microsoft documents a Windows Update troubleshooter for Windows 11:

1. Open Settings > System > Troubleshoot > Other troubleshooters.
2. Next to Windows Update, select Run.

It opens in the Get Help app, runs diagnostics and applies fixes it finds. Restart afterwards and select Check for updates again.

4. Fix the basics: space, time, hardware and security software

These cover a large share of failures:

• Disk space. Microsoft asks for at least 20 GB free on 64-bit Windows 11 for updating. Check in Settings > System > Storage, and use Cleanup recommendations or remove large files you no longer need.
• Date and time. In Settings > Time & language > Date & time, turn on Set time automatically and Set time zone automatically, then select Sync now.
• External devices. Disconnect external drives, docks and other hardware you do not need. This matters most for feature updates and 0xC1900101 errors.
• Network. Use a stable connection and turn off any VPN while updating.
• Third-party antivirus. Temporarily disable or uninstall it; Microsoft Defender takes over automatically.
• Drivers. Update network and display drivers from the PC or hardware maker.

5. Clear the Windows Update cache

A corrupt download makes the same update fail every time. Clearing the cache forces a fresh download:

1. Press Windows key + R, type services.msc and press Enter.
2. Right-click Windows Update and choose Stop.
3. Open File Explorer, go to C:\Windows\SoftwareDistribution and delete everything inside the folder (not the folder itself).
4. Back in Services, right-click Windows Update and choose Start.
5. Restart, then go to Settings > Windows Update > Check for updates.

6. Repair Windows with DISM and SFC

Component store corruption shows up as codes such as 0x800f081f or 0x80073701. Repair it from an administrator terminal:

1. Right-click Start and select Terminal (Admin).
2. Run DISM /Online /Cleanup-Image /RestoreHealth and wait for it to finish.
3. Run sfc /scannow.
4. Restart and try the update again.

Our guides to DISM RestoreHealth and sfc /scannow explain the output messages and what to do if either tool reports errors it could not fix.

7. Driver and feature updates that keep failing

Not every failure is a Windows problem. Two cases behave differently:

• A driver update fails repeatedly. Windows Update sometimes offers a driver that does not suit your exact hardware. Check whether the PC or component maker has a newer version on its support page and install that instead. Driver updates are listed separately under Driver updates in Update history, so you can confirm which one it is.
• A feature update fails. Moving to a new version of Windows 11 needs more free space and is more sensitive to old drivers, third-party security software and attached hardware. Free extra space, disconnect everything you do not need, update display and network drivers, and check that the PC still meets the requirements. Microsoft’s own troubleshooting page also lists a clean installation as a last resort for stubborn upgrade failures, but back up first because that removes everything.

8. If it still fails

• Pause and wait. Occasionally an update has a known issue on specific hardware. You can pause Windows 11 updates for a week or more from Settings > Windows Update and try again after the next release.
• Undo a bad update. If an update did install but caused problems, you can uninstall it from Update history > Uninstall updates.
• Reinstall Windows in place. Go to Settings > System > Recovery and select Reinstall now next to Fix problems using Windows Update. This reinstalls the current version of Windows and keeps your apps, files and settings.

If that also fails, Reset this PC with Keep my files is the last software step.