How to Fix Fix Error 0x80070664 — Windows Installer Rollback Failure on Windows
Getting error 0x80070664 during installation or update? Installer rollback failed? Software installation stuck in broken state after failed update? MSI rollback error? Fix this Windows Installer rollback failure.
Symptoms
You might be experiencing this problem if you notice:
- •Software installation fails with error 0x80070664
- •Update rollback fails leaving software in broken state
- •Windows Installer shows rollback error in event log
- •Can't install, update, or uninstall affected software
- •Repeated installation attempts fail with same error
- •Office or Visual Studio updates trigger this error
Common Causes
- ⚠Windows Installer rollback data corrupted or missing
- ⚠Installer cache (.msi files) deleted by cleanup tools
- ⚠Previous installation left inconsistent registry state
- ⚠Disk full during rollback operation
- ⚠Installer service interrupted during critical operation
- ⚠Conflicting versions of same software installed
Solutions
Solution 1: Repair Windows Installer Cache
- 1Windows Installer caches .msi files in:
- 2C:\Windows\Installer
- 3If cleanup tools deleted these: rollback can't work
- 4Never manually delete files from C:\Windows\Installer!
- 5To fix: repair the affected application:
- 6Settings → Apps → find the app → Modify → Repair
- 7This re-caches the necessary installer files
- 8For Office: Settings → Apps → Microsoft Office → Modify
- 9Choose "Online Repair" for thorough fix
- 10After repair: retry the update that failed
Solution 2: Clean Install the Affected Software
- 1If repair doesn't work — clean reinstall:
- 2First try normal uninstall:
- 3Settings → Apps → find app → Uninstall
- 4If uninstall also fails:
- 5Download Microsoft's Program Install/Uninstall Troubleshooter:
- 6aka.ms/diag_uninstall
- 7This can force-remove broken installations
- 8For Office: use SaRA tool (aka.ms/SaRA)
- 9After removal: restart PC
- 10Download fresh installer from the vendor
- 11Install clean — this includes latest patches
- 12No need for separate updates after fresh install
Solution 3: Fix Windows Installer Service
- 1Re-register Windows Installer service:
- 2CMD as Admin:
- 3msiexec /unregister
- 4msiexec /regserver
- 5This re-registers the MSI engine
- 6Also check the service is running:
- 7services.msc → Windows Installer → set to Manual
- 8Ensure it starts when needed (it auto-starts for installations)
- 9Clear temp installer files:
- 10Delete contents of %TEMP% folder
- 11Also clear: C:\Windows\Temp (files you can delete)
- 12Retry the installation after these fixes
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