How to Fix Windows 11 Update Stuck at 0%, 99%, or 100% (2026)

A Windows 11 update that stays at 0%, 99%, or 100% can look completely frozen, but the percentage alone does not reveal the cause. The download may be waiting for a stable connection, the installer may be short on disk space, or Windows Update may be rebuilding components in the background.

This guide starts with the safest checks and moves gradually to repair commands and Windows 11's built-in recovery reinstall. You do not need a third-party “PC repair” app, a registry cleaner, or an unofficial Windows image.

The instructions apply to Windows 11 Home and Pro. Menu names can vary slightly between releases, managed work computers, and devices using Windows Insider builds.

How to Fix Windows 11 Update Stuck at 0%, 99%, or 100% (2026)

Is Windows Update Really Stuck?

Windows may remain on one percentage for a long time while it verifies files, creates a restore path, installs a large cumulative package, or processes a feature update. Slower storage and older processors can make the apparent pause much longer.

If you are still inside the Settings app, wait at least 30 minutes before assuming the process has failed. If the PC is on a full-screen “Working on updates” or “Updates are underway” screen, give it considerably more time and keep the device powered. A forced shutdown during the installation phase can damage system files.

Why Windows 11 Updates Get Stuck

• An unstable internet connection, VPN, proxy, or DNS problem.
• Insufficient free space on the Windows drive.
• Corrupted files in the SoftwareDistribution update cache.
• Windows Update, BITS, or Cryptographic Services not running correctly.
• Damaged system files or a corrupted Windows component store.
• An incompatible driver, security product, or background application.
• Incorrect date, time, or time-zone settings.
• A pending restart from an earlier installation.
• A specific update that Microsoft has paused or replaced.

What 0%, 99%, and 100% Usually Mean

The same percentage can describe different stages. Before changing anything, read the status line in Windows Update and note whether Windows says Downloading, Installing, Pending restart, or Working on updates.

If the desktop is available, open Task Manager with Ctrl + Shift + Esc and check the Performance tab. Continuing disk, CPU, or network activity is a useful sign that Windows is still working, although low activity alone does not prove a failure. Also check whether the status changes after a normal restart; many “stuck” installations are actually waiting for that restart.

Fix 1: Restart and Remove Simple Blockers

Return to Settings → Windows Update and select Check for updates. If you see an error code, write it down before moving to the next fix.

Fix 2: Free Enough Disk Space

Windows needs working space to download, unpack, install, and roll back an update if something fails. Microsoft says quality updates typically need 2–3 GB or more, while feature updates commonly need 6–11 GB or more. Keeping at least 20 GB free on drive C: is a safer practical target.

1. Open Settings → System → Storage.
2. Select Cleanup recommendations.
3. Review temporary files carefully and remove only items you no longer need.
4. Empty the Recycle Bin after checking that it contains nothing important.
5. Move large personal files to another drive if necessary.

If the Recycle Bin itself has disappeared, follow our guide to restore a missing Recycle Bin in Windows before deleting files permanently.

Fix 3: Run the Windows Update Troubleshooter

The built-in troubleshooter checks the update service, pending operations, common registry settings, and other components. Microsoft recommends running it before manually resetting Windows Update.

1. Open Start → Settings → System → Troubleshoot.
2. Select Other troubleshooters.
3. Find Windows Update and select Run.
4. Apply the recommended changes.
5. Restart the PC.
6. Open Settings → Windows Update → Check for updates.

On some Windows 11 releases, Microsoft may open the Get Help app and run automated diagnostics. Let the tool complete before closing it.

Fix 4: Pause, Resume, and Check Update History

A partially queued download can sometimes restart correctly after Windows refreshes its update state.

1. Open Settings → Windows Update.
2. Pause updates temporarily.
3. Restart the PC.
4. Return to Windows Update and resume updates.
5. Select Check for updates.

Next, open Windows Update → Update history. Find the failed package and record both its KB number and error code. If the code is 0x8024402F, see our focused guide to fix Windows 11 update error 0x8024402F.

Fix 5: Clear the Windows Update Cache

Windows stores downloaded update files in C:\Windows\SoftwareDistribution. If one of those files is incomplete or corrupted, Windows can repeatedly retry the same broken package.

1. Press Win + R, type services.msc, and press Enter.
2. Find Windows Update.
3. Right-click it and select Stop.
4. Open File Explorer and go to C:\Windows\SoftwareDistribution.
5. Delete the contents inside the folder, but do not delete the Windows folder itself.
6. Return to Services, right-click Windows Update, and select Start.
7. Restart the PC and check for updates.

Fix 6: Repair Windows With DISM and SFC

Windows Update depends on the Windows component store and protected system files. Microsoft recommends running DISM first, then System File Checker.

1. Open Start and type cmd.
2. Right-click Command Prompt and choose Run as administrator.
3. Run the first command and wait for it to finish:

DISM.exe /Online /Cleanup-Image /RestoreHealth

When DISM reports that the operation completed successfully, run:

sfc /scannow

Do not close Command Prompt while either scan is running. When SFC reaches 100%, restart Windows and try the update again.

Fix 7: Reset the Main Windows Update Components

Use this step only after the troubleshooter, cache cleanup, DISM, and SFC have failed. The following commands stop the relevant services, rename the update databases so Windows can rebuild them, and then restart the services.

1. Search for cmd and open Command Prompt as administrator. Do not use a standard non-administrator window.
2. Run each line separately:

net stop bits
net stop wuauserv
net stop cryptsvc
ren %systemroot%\SoftwareDistribution SoftwareDistribution.old
ren %systemroot%\System32\catroot2 catroot2.old
net start cryptsvc
net start wuauserv
net start bits

Restart the computer and check for updates. If a rename command says the destination already exists, a previous .old folder may already be present. Do not delete it until you have confirmed that Windows Update works and you no longer need the backup.

Fix 8: Check the Error Code Before Changing Drivers

Different codes point to different causes. Do not uninstall drivers or security tools blindly.

For driver-related errors, obtain the latest BIOS, chipset, storage, graphics, and network drivers from the PC or motherboard manufacturer's official support page. Avoid third-party driver packs.

Fix 9: Install One Failed KB Manually

If only one cumulative update fails while other updates work, search for its exact KB number in the Microsoft Update Catalog.

1. Open Settings → Windows Update → Update history.
2. Copy the failed KB number.
3. Search for it in the Microsoft Update Catalog.
4. Choose the package matching your Windows version and architecture, such as x64 or ARM64.
5. Download and run the Microsoft package, then restart.

Do not download Windows update packages from file-sharing sites. If you are unsure which package matches your device, skip this method and use the repair option below.

Fix 10: Reinstall the Current Windows Version Without Deleting Apps

Recent Windows 11 versions include a recovery option designed specifically for damaged system files and Windows Update components. Microsoft says it reinstalls the same Windows version and preserves apps, personal files, and settings.

1. Open Settings → System → Recovery.
2. Find Fix problems using Windows Update.
3. Select Reinstall now.
4. Keep the PC connected to power and the internet.
5. Allow the download and repair installation to complete.
6. Restart when prompted.

The option may be missing on an older Windows 11 release, a work- or school-managed PC, or a device controlled by certain update policies. It is not the same as Reset this PC.

What If the PC Is Stuck Before Windows Starts?

If Windows repeatedly fails during startup after an update, allow Automatic Repair to open. You can also interrupt startup only when necessary to reach the Windows Recovery Environment, then choose Troubleshoot → Advanced options.

• Try Startup Repair first.
• Use Uninstall Updates to remove the latest quality update if the failure began immediately after it.
• Use System Restore only if a suitable restore point exists.
• Do not choose Reset this PC until safer recovery options and backups have been considered.

If Windows starts but individual apps fail afterward, our guides to repair a crashing Microsoft Photos app and fix “The directory name is invalid” on Windows 10/11 cover two common post-update symptoms.

How to Prevent the Problem Next Time

• Keep at least 20 GB free on the Windows drive when possible.
• Install driver and BIOS updates only from the device manufacturer.
• Do not use modified Windows images, update blockers, or registry cleaners.
• Keep a current backup of important files.
• Restart the PC regularly instead of leaving updates pending for weeks.
• Check known issues before installing an optional preview update on an essential work computer.

When to Stop and Get Professional Help

Stop repeating update repairs if the drive makes unusual clicking sounds, Windows reports storage hardware errors, the PC shows repeated blue-screen crashes, or the computer loses power unexpectedly. Those symptoms may indicate a hardware problem rather than an update-cache problem. Back up accessible files and have the storage, memory, and power system checked.

On a work or school computer, contact the administrator before resetting components or installing a KB manually. Organization policies may intentionally delay updates. If Windows Recovery asks for a BitLocker recovery key, do not guess or erase the drive; retrieve the correct key from the account or administrator that manages the device.

For more safe troubleshooting articles, visit our Windows guides and repair hub.

Frequently Asked Questions