Error 0x80070002File not found (Windows Update)

What it means

0x80070002 decodes to ERROR_FILE_NOT_FOUND (decimal 2): "the system cannot find the file specified". The 0x8007 prefix marks a Win32 error. In the context where most people meet it, Windows Update, it means the update mechanism looked for a file, typically in its download cache, and it was not there.

That usually happens because a download was interrupted, the update cache became corrupted, or the datastore that tracks update state is inconsistent.

Fixes, safest first

1. Windows Update troubleshooter. Settings → System → Troubleshoot → Other troubleshooters → Windows Update. It repairs the common cache and datastore problems automatically.

2. Reset the update components. In an elevated prompt:

net stop wuauserv
net stop bits
net stop cryptSvc
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
ren C:\Windows\System32\catroot2 catroot2.old
net start wuauserv
net start bits
net start cryptSvc

Renaming SoftwareDistribution forces Windows to rebuild the update cache from scratch, which supplies the missing files. Retry the update afterward; the process is driven by TiWorker.exe.

3. Repair system files if the error persists:

DISM /Online /Cleanup-Image /RestoreHealth
sfc /scannow

See DISM and sfc.

4. Check date and time. A wrong system clock can break the secure connection to update servers and produce cache and validation failures; correct it and sync time.

5. Confirm the update services are set correctly. Windows Update (wuauserv), BITS and Cryptographic Services should be running or set to manual, not disabled. Check with sc or services.msc.

If it appears outside Windows Update

The same "file not found" code can appear in backup, activation or scripting when a specific file or path is genuinely missing. There the fix is to restore or recreate the named file, not to reset update components.