Troubleshooting Guide · 2025

How to Fix Windows Update
Errors on Windows 10 & 11

A complete, step-by-step guide to diagnosing and resolving the most common Windows Update failures — without reinstalling your OS.

⏱ ~12 min read Windows 10 (22H2) Windows 11 (23H2 / 24H2) Updated March 2025

Windows Update is essential for keeping your system secure and stable — yet it is also one of the most frustrating features when it refuses to work. Whether you see a cryptic hex error code or the progress bar simply freezes, there is almost always a clear cause and a reliable fix. This guide covers the full spectrum of solutions for both Windows 10 and Windows 11, ordered from quickest to most thorough.

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Before you begin Create a System Restore point before making any significant changes. Go to Control Panel → System → System Protection → Create.
Section 01

Why Windows Updates Fail: Root Causes to Know

Understanding the source of an error makes the fix obvious. Rather than trying methods at random, identify which category your problem falls into — then jump to the relevant section below.

✦ Most Common Causes

  • Corrupted update cache (SoftwareDistribution folder)
  • Disabled or crashed Windows Update services
  • Insufficient free space on the system drive
  • Corrupted Windows system files (SFC / DISM needed)

✦ Less Obvious Causes

  • Third-party antivirus blocking update processes
  • VPN or proxy settings blocking Microsoft servers
  • Conflicting startup programs or services
  • Driver or firmware incompatibility (feature updates)
Section 02

Most Common Windows Update Error Codes Explained

When Windows Update fails it logs a hexadecimal error code in Settings → Windows Update → Update history. The table below maps the most frequently reported codes to their meanings and the recommended fix.

Error Code Meaning Recommended Fix
0x80070005 Access denied — insufficient permissions Run SFC / DISM (Section 6)
0x800705b4 Operation timed out Reset services (Section 4)
0x80240034 Update not applicable / metadata error Clear cache (Section 5)
0x80070020 File locked by another process Clean boot (Section 10)
0x80073712 Required file is missing DISM /RestoreHealth (Section 6)
0x8007000D Data invalid — corrupted update file Clear cache → Manual install
0xC1900101 Driver failure during feature update Update or roll back the driver
0x80072EFE Connection to update server terminated Check proxy / VPN (Section 9)
0x80070070 Not enough disk space Free disk space (Section 8)
0x80072EE2 Request to server timed out Check proxy / VPN (Section 9)
Method 01

Run the Built-in Windows Update Troubleshooter

The fastest first step is always the official troubleshooter. It automatically detects and fixes many common problems — corrupted registry keys, stalled services, firewall rules — without any manual intervention.

On Windows 11

  1. Press Win + I to open the Settings app.
  2. Navigate to System → Troubleshoot → Other troubleshooters.
  3. Find Windows Update in the list and click Run.
  4. Follow the on-screen instructions and apply any suggested fixes.

On Windows 10

  1. Open Settings → Update & Security → Troubleshoot.
  2. Click Additional troubleshooters.
  3. Select Windows Update and click Run the troubleshooter.
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After the troubleshooter runs Restart your PC even if the troubleshooter reports no issues — some fixes only take effect after a reboot. Then open Windows Update and check for updates again.
Method 02

Reset Windows Update Services via Command Prompt

If the troubleshooter did not help, the underlying services may need to be manually stopped, reset, and restarted. This is one of the most effective fixes for 0x800705b4 and 0x80070005.

Reset All Update Services

Open Command Prompt as Administrator (Win + X → Terminal (Admin), or search for "cmd" and choose Run as administrator). Paste the commands below one by one and press Enter after each: 

CMD — Administratornet stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver

ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
ren C:\Windows\System32\catroot2 catroot2.old

net start wuauserv
net start cryptSvc
net start bits
net start msiserver

This stops the four core update-related services, renames the corrupted cache folders so Windows rebuilds them fresh, then restarts all services. Restart your PC afterwards and try Windows Update again.

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Cannot rename the folders? If the ren commands return an "access denied" error, the services did not stop properly. Try restarting your PC in Safe Mode and running the rename commands from there.
Method 03

Manually Clear the Windows Update Cache

The SoftwareDistribution\Download folder stores partially downloaded update files. When these files become corrupted, updates fail to apply. Deleting them forces Windows to re-download clean copies from Microsoft's servers.

  1. Stop the Windows Update service using the first four net stop commands from Method 02.
  2. Open File Explorer and navigate to C:\Windows\SoftwareDistribution\Download.
  3. Press Ctrl + A to select everything, then delete. Do not remove the folder itself — only its contents.
  4. Open Services (Win + R → services.msc), find Windows Update, and click Start.
  5. Go to Settings → Windows Update and check for updates.
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Quick shortcut Type %windir%\SoftwareDistribution\Download directly into the File Explorer address bar and press Enter to jump straight to the cache folder.
Method 04

Repair Windows System Files with SFC and DISM

Corrupted Windows system files are a leading cause of errors like 0x80073712 and 0x80070005. The System File Checker (SFC) and DISM tool scan for and repair them automatically.

Step 1 — System File Checker

Open Command Prompt as Administrator and run:

CMD — Administratorsfc /scannow

Wait for the scan to complete (10–20 minutes). If it reports "Windows Resource Protection found corrupt files and repaired them," restart and try updating. If it reports "could not fix some files," proceed to DISM below.

Step 2 — DISM Component Store Repair

Run all three commands in sequence — each goes progressively deeper:

CMD — AdministratorDISM /Online /Cleanup-Image /CheckHealth

DISM /Online /Cleanup-Image /ScanHealth

DISM /Online /Cleanup-Image /RestoreHealth

The /RestoreHealth switch downloads replacement files directly from Windows Update — ensure you have an active internet connection. This process takes 15–30 minutes. Restart once complete, then run sfc /scannow once more to confirm all files are repaired.

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DISM with a local source If your internet connection is unreliable, point DISM to a local Windows ISO:
DISM /Online /Cleanup-Image /RestoreHealth /Source:D:\sources\install.wim
Method 05

Download and Install Windows Updates Manually

If a specific update keeps failing through the Settings panel, bypass the Windows Update client entirely and install the package directly from Microsoft's Update Catalog.

  1. Open Settings → Windows Update → Update history and note the KB number of the failed update (e.g., KB5034441).
  2. Visit catalog.update.microsoft.com and search for that KB number.
  3. Download the version matching your system — x64 for most modern PCs, ARM64 for Surface Pro X and similar devices.
  4. Double-click the downloaded .msu file, follow the prompts, and restart when asked.
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For Windows 11 feature updates Use the official Windows 11 Installation Assistant (available on Microsoft's Windows 11 download page) instead of the Update Catalog — it handles annual feature upgrades more gracefully than the Settings panel when errors occur.
Method 06

Free Up Disk Space Before Running Windows Update

Major Windows 10 and Windows 11 feature updates require between 10 GB and 20 GB of free space on the system drive. If your C: drive is nearly full, updates will fail silently or show error 0x80070070.

  1. Search for Disk Cleanup in the Start menu, select the C: drive, and check Temporary files, Recycle Bin, and Windows Update Cleanup.
  2. Click Clean up system files to also remove the Windows.old folder, which can occupy 10–30 GB after a previous upgrade.
  3. Move large personal files (videos, photos) to an external drive or cloud storage.
  4. Uninstall unused applications via Settings → Apps → Installed apps.
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Minimum free space recommendation Microsoft recommends at least 20 GB of free space before a feature update. Security (quality) updates are considerably lighter — typically 2–4 GB.
Method 07

Check Proxy, VPN, and Firewall Settings

Windows Update communicates with Microsoft's servers over HTTPS. A misconfigured proxy, active VPN, or strict firewall rule can silently block these connections, producing errors like 0x80072EFE or 0x80072EE2.

Reset proxy settings

Open Command Prompt as Administrator and run:

CMD — Administratornetsh winhttp reset proxy

Restart your PC and check for updates again.

Disconnect your VPN

Temporarily disconnect from any VPN client before running Windows Update. Most corporate VPNs route all traffic through company gateways that may block Microsoft's update infrastructure. Re-enable your VPN once the updates finish installing.

Verify Windows Firewall rules

Go to Control Panel → Windows Defender Firewall → Allow an app or feature through Windows Defender Firewall and confirm that Windows Update is allowed on both Private and Public networks.

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Third-party firewalls Security suites like Kaspersky, ESET, or Bitdefender may have their own network filtering that overrides Windows Firewall. Temporarily disable the network protection component (not the full antivirus) and retry the update.
Method 08

Perform a Clean Boot to Isolate Software Conflicts

If none of the above methods resolved the issue, a third-party application is likely interfering with Windows Update. A clean boot starts Windows with only Microsoft services active, making it easy to identify the conflicting program.

  1. Press Win + R, type msconfig, and press Enter to open System Configuration.
  2. On the Services tab, check Hide all Microsoft services, then click Disable all.
  3. Open Task Manager (Ctrl + Shift + Esc), go to the Startup apps tab, and disable every entry.
  4. Click OK in msconfig, then restart your PC.
  5. Run Windows Update. If it succeeds, re-enable services in small batches to pinpoint the conflicting application.
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Don't forget to re-enable services After testing, return to msconfig, re-enable all services and startup items you disabled, and restart normally. Leaving the PC in clean boot state long-term may cause other applications to malfunction.
FAQ

Frequently Asked Questions About Windows Update Errors

Q Is it safe to delete files in the SoftwareDistribution folder? ▼
Yes — deleting the contents of C:\Windows\SoftwareDistribution\Download is completely safe. These are temporary files used during the update process. Windows will re-download whatever it needs the next time you check for updates. Never delete the folder itself, only its contents.
Q How long does DISM /RestoreHealth take to complete? ▼
On a typical broadband connection, the /RestoreHealth scan takes between 15 and 45 minutes depending on how many files need replacing and your internet speed. The progress percentage may appear stuck at certain points — this is normal. Do not close the Command Prompt window until you see "The restore operation completed successfully."
Q Windows Update is stuck at 0% or a specific percentage — what should I do? ▼
A stuck progress bar almost always points to a stalled background service or a locked file in the update cache. Start with Method 02 (reset services) and Method 03 (clear cache). If the problem persists after a restart, run the SFC and DISM scans from Method 04.
Q Can I skip or delay a Windows update I don't want? ▼
On Windows 10 and 11 Home, you cannot permanently skip security updates. You can pause updates for up to 5 weeks in Settings → Windows Update → Pause updates. On Windows 11 Pro and Enterprise, feature updates can be deferred for up to 52 weeks via Group Policy. To hide a specific problematic update, use the Show or hide updates troubleshooter available from Microsoft's support site.
Q My update fails only at the very end of installation — what does that mean? ▼
Failures at the final stage (after download completes) typically indicate either a driver conflict (0xC1900101 family) or insufficient disk space for the update to expand. Check Event Viewer → Windows Logs → Setup for detailed error entries, then cross-reference with the error code table in Section 02 of this guide.
Conclusion

Still Stuck? Last-Resort Options for Persistent Errors

If every method in this guide fails to resolve your Windows Update errors, these more aggressive approaches will fix even deeply corrupted installations:

  1. In-place upgrade (repair install) — download the Windows 10 or Windows 11 ISO from Microsoft, mount it, and run setup.exe choosing Keep personal files and apps. This reinstalls Windows over itself, replacing all system files, without wiping your data or installed programs.
  2. Reset this PC — go to Settings → System → Recovery → Reset this PC and choose Keep my files. More aggressive than an in-place upgrade but still preserves documents and personal files.
  3. Contact Microsoft Support — for persistent errors on OEM or enterprise machines, Microsoft's support team can analyse your Windows Update logs and provide targeted fixes free of charge at support.microsoft.com.

🗺 Recommended Fix Order

Work through the methods in sequence: Troubleshooter → Reset services & clear cache → SFC / DISM → Manual install → Free disk space → Check proxy/VPN → Clean boot → In-place upgrade. The vast majority of Windows Update errors are resolved within the first three steps — the rest exist for stubborn edge cases.