How to Fix Windows Update Error 0x800705b4 in 11 Ways

What Is Error 0x800705b4 on Windows 11 Upgrade?

Experiencing error 0x800705b4 on Windows 11 upgrade can be challenging. This error indicates that a Windows update operation failed because a required process timed out or could not complete successfully.

The error code 0x800705b4 most commonly appears when:

• Windows Update cannot communicate properly with update services.
• Security software interrupts the update process.
• Corrupted update files prevent installation.
• Windows system files become damaged.
• Required update services stop responding.

On Windows 11, the issue may occur during cumulative updates, feature updates, or major version upgrades. When the error appears, Windows may display messages such as:

• "There were problems installing updates."
• "Update failed."
• "Something didn’t go as planned."

Although the update process stops, the error usually does not indicate hardware failure. In most cases, repairing update components and system files resolves the problem.

How to Fix Windows Update Error 0x800705b4?

Several factors can trigger update failures. The methods below, like running DSIM tools or restarting Windows update services, address the most common causes of Windows 11 update error 0x800705b4 and can be performed in order until the problem is resolved.

Method 1: Check Disk Space and Network Connection

Windows updates require sufficient storage space and a stable internet connection. If the system drive is nearly full or the connection drops during the update process, installation may fail before completion.

Before attempting advanced repairs, ensure your C: drive has enough free space and confirm that your internet connection is stable. If possible, restart your router and temporarily switch from Wi-Fi to Ethernet for better reliability.

Tip:

Microsoft recommends keeping at least 20 GB of free space available for major feature updates.

Method 2: Run Windows Update Troubleshooter

Windows includes a built-in troubleshooter that automatically checks for common update issues. It can identify misconfigured services, corrupted cache files, and update-related settings problems.

• Press "Windows + I" to open Settings, then select "System".

• Click "Troubleshoot" and choose "Additional troubleshooters".

• Locate "Windows Update" and click "Run the troubleshooter".

  

• Allow Windows to scan for issues.

• Apply any recommended fixes and restart your computer, then try running Windows Update again.

Method 3: Restart Windows Update Services

Windows Update depends on several background services. If one of these services becomes stuck or stops responding, updates may fail.

Restarting the services refreshes update operations and clears temporary communication issues. The command below stops the Windows Update service so it can be restarted cleanly.

• Type "cmd" in Windows Search, then right-click "Command Prompt" and select "Run as administrator," and run the following commands one by one: "net stop bits", "net stop wuauserv", "net stop appidsvc", and "net stop cryptsvc".

  

• Now, run the following commands one by one: "net start bits", "net start wuauserv", "net start appidsvc", and "net start cryptsvc".

• Close the Command Prompt and restart your computer to check for updates again.

Method 4: Temporarily Disable Antivirus Software

Third-party antivirus programs sometimes block update downloads or interfere with Windows Update processes. Temporarily disabling them can help determine whether they are causing the problem.

• Open your antivirus program, then locate the protection settings and disable real-time protection temporarily.

• Leave Windows Defender enabled if desired and run Windows Update.

• After testing, re-enable antivirus protection immediately.

Note:

Only disable antivirus protection temporarily and avoid downloading files while protection is off.

Method 5: Change Microsoft Update Settings

Windows can download updates for other Microsoft products in addition to Windows itself. Occasionally, these additional update checks contribute to update failures. Disabling this option simplifies the update process and may eliminate conflicts.

• Open "Settings" and click "Windows Update".

• Select "Advanced options" and locate "Receive updates for other Microsoft products when you update Windows".

  

• Turn the setting "Off" and restart the computer, then retry the update.

Method 6: Perform a Clean Boot

Background services and startup applications can interfere with update installations. A clean boot starts Windows with only essential Microsoft services.

• Press "Windows + R" then type: "msconfig" and press "Enter".

  

• Open the "Services" tab and check "Hide all Microsoft services". Click "Disable all".

  

• Open the "Startup" tab, then click "Open Task Manager".

  

• Disable all startup programs while keeping track of the ones you are disabling and restart Windows, then run the update again.

• Re-enable services after troubleshooting is complete.

Method 7: Reset Windows Update Components

Corrupted update cache folders can repeatedly trigger update failures. Resetting update components forces Windows to rebuild fresh update files.

This process clears the SoftwareDistribution and Catroot2 folders that store temporary update data.

• Open Command Prompt as Administrator and stop update services with the following commands: "net stop wuauserv" then "net stop bits".

  

• Open File Explorer and navigate to: "C:\Windows\SoftwareDistribution" to delete all contents inside the folder.

• Navigate to: "C:\Windows\System32\catroot2" and rename the folder to "catroot2.old".

• Return to the Command Prompt and restart services with the commands "net start wuauserv" then "net start bits."

• Restart the computer. Windows automatically recreates these folders during the next update check using fresh update files.

Method 8: Check for System File Corruption

Corrupted Windows files can prevent updates from installing correctly. The System File Checker scans protected system files and repairs damaged versions.

• Open Command Prompt as Administrator and run: "sfc /scannow".

  

• Wait for the scan to finish and review the results, then restart your computer.

SFC compares system files against cached Windows copies and replaces corrupted versions automatically.

Method 9: Run DISM Tool

If SFC cannot repair all files, Deployment Image Servicing and Management (DISM) can repair the Windows component store itself.

• Open Command Prompt as Administrator and run: "DISM /Online /Cleanup-Image /RestoreHealth".

  

• Wait for the repair process to complete, then restart the computer and run Windows Update again.

DISM downloads healthy system files from Microsoft servers and repairs damaged Windows components used by updates.

Method 10: Use Windows Update Assistant

Windows Update Assistant can bypass certain update-related issues and install the latest Windows version directly.

• Visit Microsoft’s Windows download page to download "Windows Update Assistant".

• Launch the tool and click "Update Now".

  

• Allow compatibility checks to complete and follow the on-screen instructions.

• Wait for the installation to finish and restart the computer when prompted.

Method 11: Manually Install the Update

If automatic installation continues to fail, you can install the update manually using the Microsoft Update Catalog.

• Open "Settings" and go to "Windows Update" to note the "KB" update number that failed.

  

• Visit the Microsoft Update Catalog website and search for the KB number to download the version matching your system.

• Run the downloaded installer and follow the installation prompts, then restart the computer after installation.

How to Recover Lost Data After Windows Update Error 0x800705b4?

Update failures usually affect system components, but interruptions can sometimes make documents, photos, and other data become hidden, moved, or temporarily unavailable.

If files go missing after Windows update error 0x800705b4, stop saving new data to the affected drive to avoid overwriting recoverable information.

4DDiG data recovery can perform a deep scan of your storage device to locate deleted, hidden, or inaccessible files caused by failed updates, system crashes, or file system errors, and restore them safely.

Steps to Recover Lost Files after Windows Update Error 0x800705b4：

• Install and launch 4DDiG, then select the drive where files were lost when you started getting the error code 0x800705b4.

  

• Allow the 4DDiG software to perform a scan and browse files by category or file type.

  

• Preview recoverable files by clicking them, and one you find the ones you want to recover after fixing the update error, you can click "Recover".

  

• Choose a different location for saving the recovered files and click "Save Now".

  

Conclusion

Windows update error 0x800705b4 is usually caused by various reasons and fortunately, it can be resolved by running the Windows Update Troubleshooter, restarting update services, resetting update components, repairing system files with SFC and DISM, or installing updates manually.

If the update failure results in missing files, Tenorshare 4DDiG provides a practical way to recover important data. By following the solutions in this guide, you can resolve error code 0x800705b4 and restore normal Windows update functionality.