(0x80070002) Windows 10 updates fail to install

For Windows 10 update error 0x80070002, start with the standard fixes first:

1. Restart the PC This can clear temporary conditions that block update installation.
2. Run the Windows Update troubleshooter Go to:
   • Start > Settings > Update & Security > Troubleshoot > Additional troubleshooters
   • Select Windows Update
   • Click Run the troubleshooter
3. Check free disk space Windows needs enough free space to install updates. For upgrades, the guidance is at least:
   • 16 GB free for a 32-bit OS
   • 20 GB free for a 64-bit OS
4. Review the CBS log if the error continues The log is located at:
   • C:\Windows\Logs\CBS\CBS.log
   Error 0x80070002 is commonly caused by missing or corrupt files, incomplete previous updates, or registry entries that point to missing files or services.
5. If updates roll back after restart, check for driver-related failures In that case:
   • Open Event Viewer and look for Windows Update error 0x80070002
   • Review the CBS log for driver update failures
6. Back up the OS disk before advanced repair steps This is important before making deeper changes such as registry repair or restoring missing system files.

If the CBS log shows a specific missing file or missing service, the fix depends on what is missing. Examples documented for this error include:

• restoring missing folders from a working machine
• restoring missing DLLs in C:\Windows\WinSxS
• fixing missing driver-related registry keys

Important: advanced fixes such as editing or deleting registry keys, changing permissions in C:\Windows\WinSxS, or copying system files from another machine carry risk and should only be done after identifying the exact missing file or service in the logs.

References:

• Troubleshoot Windows Update error 0x80070002
• Troubleshoot problems updating Windows