wuauserv
The Windows Update service, which manages detection, download, and installation of Windows updates.
Windows Update Repair Utility
Update Fix
Update Fix is a free Windows PowerShell utility for troubleshooting Windows Update download and servicing problems. It resets core update services and cache folders, repairs the Windows component store with DISM, runs System File Checker, and starts the services again.
Update Fix deletes the current SoftwareDistribution and catroot2 folders. Windows recreates these working folders as needed, but clearing them removes the existing local Windows Update cache/state stored there.
Workflow
Four major repair stages
01Stop Services
02Clear Update Folders
03DISM + SFC
04Start Services
Services
Stops Windows Update-related services
Before deleting update working folders, the script attempts to stop four Windows services with PowerShell Stop-Service -Force.
cryptSvc
Cryptographic Services, used by Windows for catalog databases, signatures, and related servicing operations.
BITS
Background Intelligent Transfer Service, used by Windows and other software for background file transfers.
msiserver
The Windows Installer service, which can participate in software installation and servicing workflows.
Each stop/start operation is wrapped in a
try/catch block. A service failure is printed in red, and the script continues to the next service.
Update Cache Reset
Deletes SoftwareDistribution and catroot2
SoftwareDistribution
The script recursively removes C:\Windows\SoftwareDistribution, which Windows Update uses for downloaded update files and update working data.
catroot2
It also recursively removes C:\Windows\System32\catroot2, which is used by Windows servicing and update catalog processing.
Both deletions use
-ErrorAction SilentlyContinue. That means the script prints its general folder-deletion completion message even if some files or folders could not be removed.
DISM
Component-store cleanup and repair
StartComponentCleanup
Runs DISM /Online /Cleanup-Image /StartComponentCleanup to clean superseded Windows component-store content.
ScanHealth
Runs DISM /Online /Cleanup-Image /ScanHealth to scan the Windows component store for corruption.
RestoreHealth
Runs DISM /Online /Cleanup-Image /RestoreHealth to repair detected component-store corruption.
Runs sequentially
The current script waits for each console command to finish before moving to the next stage.
System File Checker
SFC /scannow
After DISM completes, Update Fix runs sfc /scannow. System File Checker verifies protected Windows system files and attempts to repair damaged copies using the Windows servicing infrastructure.
Service Recovery
Starts the services again
The script loops through the same four service names and attempts to start each one with Start-Service. Individual startup failures are reported while the script continues processing the remaining services.
How To Run
Launching Update Fix
- Download and extract Update Fix.zip.
- Run Run Me.bat.
- The launcher starts PowerShell with -ExecutionPolicy Bypass and requests administrator elevation through UAC.
- The four Windows Update-related services are stopped.
- SoftwareDistribution and catroot2 are deleted.
- DISM StartComponentCleanup, ScanHealth, and RestoreHealth run.
- sfc /scannow runs.
- The four services are started again.
- Press Enter to close the PowerShell window.
The included Read Me notes that Windows 11 may display a “Windows protected your PC” SmartScreen message because the script was downloaded. Review the files before choosing “More info” and “Run anyway.”
If Problems Continue
Repair-install guidance from the included Read Me
The Read Me recommends using Microsoft's Windows 10/11 Installation Assistant or installation-media tools if Windows Update problems continue, with the goal of keeping files and apps while installing the latest Windows version/updates.
Windows 10
The included documentation points users to Microsoft's Windows 10 software-download page.
Windows 11
The included documentation points users to Microsoft's Windows 11 software-download page.
Transparency
What the current script does and does not do
Actively resets update state
This is not a read-only diagnostic. It stops services, deletes Windows Update working folders, performs component-store servicing, and can repair protected system files.
No third-party repair software
The repair operations use built-in Windows services, DISM, SFC, and PowerShell commands.
No direct web downloads
The current PowerShell script does not contain Invoke-WebRequest, Invoke-RestMethod, or another explicit downloader.
No automatic reboot
The script does not restart Windows automatically after completing the repair sequence.
FAQ
Frequently asked questions
What Windows Update services are reset?
wuauserv, cryptSvc, bits, and msiserver.
What folders are deleted?
C:\Windows\SoftwareDistribution and C:\Windows\System32\catroot2.
What DISM commands are used?
StartComponentCleanup, ScanHealth, and RestoreHealth.
Does it also run SFC?
Yes. sfc /scannow runs after the DISM commands.
Does it require administrator access?
Yes. The included batch launcher elevates PowerShell through UAC.
Will it reboot the PC?
No. The current script contains no automatic restart command.