How to Fix Fix Windows Error 0x80070670 — Installer Configuration Data Corrupt on Windows
Getting Windows error code 0x80070670? Installer configuration data corrupt or MSI installation failure? Fix error 0x80070670 with step-by-step solutions.
Symptoms
You might be experiencing this problem if you notice:
- •Error 0x80070670 when installing software via MSI
- •Windows Update fails with error 0x80070670
- •Application installation rolls back with this error
- •Program repair or modify fails with this code
- •Silent installations fail with exit code referencing 0x80070670
- •Group Policy software deployment fails with this error
Common Causes
- ⚠Corrupted Windows Installer configuration data
- ⚠Damaged MSI database or transform file
- ⚠Windows Installer service in broken state
- ⚠Incomplete previous installation leaving corrupt registry data
- ⚠Antivirus blocking installer file access during configuration read
- ⚠Disk errors corrupting installer cache files
Solutions
Solution 1: Re-register Windows Installer
- 1Open Command Prompt as Administrator
- 2Unregister Windows Installer:
- 3msiexec /unregister
- 4Wait a few seconds, then re-register:
- 5msiexec /regserver
- 6Restart the Windows Installer service:
- 7net stop msiserver
- 8net start msiserver
- 9Retry the installation
Solution 2: Clear Installer Cache
- 1Open File Explorer
- 2Navigate to: C:\Windows\Installer
- 3This folder contains cached MSI files
- 4Do NOT delete all files — only orphaned ones
- 5Instead, use the Windows Installer Cleanup utility approach:
- 6Open Command Prompt as Administrator
- 7Run system file repair:
- 8sfc /scannow
- 9DISM /Online /Cleanup-Image /RestoreHealth
- 10Restart PC and retry installation
Solution 3: Install in Clean Boot
- 1Open System Configuration: Win+R → msconfig → Enter
- 2Go to Services tab
- 3Check "Hide all Microsoft services"
- 4Click "Disable all"
- 5Go to Startup tab → Open Task Manager
- 6Disable all startup items
- 7Restart PC
- 8Retry the installation in clean boot state
- 9Re-enable services after successful installation
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