How to Fix Fix Error 0x80070493 — CBS Component Store Corruption on Windows
Getting error 0x80070493 during Windows Update or system repair? Component-Based Servicing store corrupted? DISM or sfc failing with this error? Fix this CBS component store 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 0x80070493
- •sfc /scannow reports corruption it cannot fix
- •DISM RestoreHealth fails with component store error
- •Feature updates fail to install with this code
- •Optional features cannot be enabled or disabled
- •Windows component registration errors in Event Viewer
Common Causes
- ⚠Component-Based Servicing (CBS) store corrupted
- ⚠Pending.xml file corrupted or orphaned
- ⚠Previous failed update left component store inconsistent
- ⚠System file checker cannot access repair source
- ⚠WinSxS folder corruption or missing manifests
- ⚠Hard shutdown during Windows Update corrupted store
Solutions
Solution 1: Repair Component Store with DISM
- 1Run DISM first (it repairs the source sfc uses):
- 2CMD as Admin:
- 3DISM /Online /Cleanup-Image /ScanHealth
- 4Wait for scan to complete (can take 10-20 minutes)
- 5If corruption found:
- 6DISM /Online /Cleanup-Image /RestoreHealth
- 7If RestoreHealth fails: specify a repair source:
- 8Mount Windows ISO → note the drive letter (e.g., D:)
- 9DISM /Online /Cleanup-Image /RestoreHealth /Source:D:\Sources\install.wim
- 10After DISM succeeds: run sfc /scannow
Solution 2: Fix Pending Operations
- 1Clear pending update operations that may be stuck:
- 2CMD as Admin:
- 3net stop wuauserv
- 4net stop bits
- 5net stop cryptSvc
- 6Rename pending operations file:
- 7ren C:\Windows\WinSxS\pending.xml pending.xml.bak
- 8ren C:\Windows\SoftwareDistribution SoftwareDistribution.bak
- 9net start wuauserv
- 10net start bits
- 11net start cryptSvc
- 12Retry Windows Update
Solution 3: Reset Windows Update Components
- 1Full component reset:
- 2CMD as Admin:
- 3net stop wuauserv
- 4net stop cryptSvc
- 5net stop bits
- 6net stop msiserver
- 7ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
- 8ren C:\Windows\System32\catroot2 catroot2.old
- 9net start wuauserv
- 10net start cryptSvc
- 11net start bits
- 12net start msiserver
- 13If still failing: consider in-place Windows repair upgrade
- 14Download Media Creation Tool → "Upgrade this PC now"
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