How to Fix Fix Error 0x80070484 — Windows Update Service Registration Missing on Windows
Getting error 0x80070484 during Windows Update? "The service registration is missing or corrupt"? Update components not registered properly? Fix this Windows Update service error.
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Main Troubleshooting Guide
How to Fix Windows Update Errors →Complete symptoms, causes, and step-by-step solutions
Symptoms
You might be experiencing this problem if you notice:
- •Windows Update fails with error 0x80070484
- •Windows Update troubleshooter reports service registration issues
- •"The service registration is missing or corrupt" message
- •Windows Update service won't start
- •Check for updates button does nothing or errors immediately
- •Update history shows repeated failures with this code
Common Causes
- ⚠Windows Update service registration corrupted in registry
- ⚠Required Windows Update DLLs not registered
- ⚠Windows Update agent files corrupted
- ⚠Anti-virus or system cleaner removed Update components
- ⚠Failed previous update left services in bad state
- ⚠System restore or rollback broke Update registration
Solutions
Solution 1: Re-register Windows Update DLLs
- 1CMD as Admin — stop services first:
- 2net stop wuauserv
- 3net stop bits
- 4net stop cryptSvc
- 5Re-register Update DLLs:
- 6regsvr32 /s wuaueng.dll
- 7regsvr32 /s wuaueng1.dll
- 8regsvr32 /s wucltui.dll
- 9regsvr32 /s wups.dll
- 10regsvr32 /s wups2.dll
- 11regsvr32 /s wuweb.dll
- 12regsvr32 /s atl.dll
- 13Start services: net start wuauserv && net start bits && net start cryptSvc
Solution 2: Reset Windows Update Components
- 1CMD as Admin:
- 2net stop wuauserv
- 3net stop cryptSvc
- 4net stop bits
- 5net stop msiserver
- 6ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
- 7ren C:\Windows\System32\catroot2 catroot2.old
- 8net start wuauserv
- 9net start cryptSvc
- 10net start bits
- 11net start msiserver
- 12sfc /scannow
- 13DISM /Online /Cleanup-Image /RestoreHealth
- 14Restart PC → Settings → Windows Update → Check for updates
Solution 3: Run Windows Update Troubleshooter
- 1Settings → System → Troubleshoot → Other troubleshooters
- 2Click "Run" next to Windows Update
- 3Let it detect and fix issues automatically
- 4If troubleshooter doesn't fix it:
- 5Download the standalone Windows Update Troubleshooter from Microsoft
- 6It has more thorough repair capabilities
- 7Last resort: download updates manually:
- 8Go to catalog.update.microsoft.com
- 9Search for the KB number that's failing
- 10Download and install the .msu file directly
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