What this code can mean
Windows could not find source files needed for a servicing or repair operation. The source depends on the feature being repaired.
Possible causes to investigate
- The repair source is unavailable or mismatched.
- The component store needs supported repair.
- Installation media does not match the system.
Safer troubleshooting order
- Record the operation and Windows edition/version.
- Use Microsoft instructions and matched official source media when directed.
- Avoid random ISO files or copied system files.
Confirm which repair source is missing
Windows could not find source files needed for the operation. The required source can depend on the Windows build, optional component or repair method. Use official Microsoft guidance and a matching source for the installed version; random ISO images or copied system files can introduce another problem.
Details to keep: Record the Windows edition/build, exact command or feature being enabled, full message and the source media/build used.
Use the code with the full message, Windows version, recent changes and diagnostic evidence. Back up important files before recovery or servicing.
Before applying a code-specific fix
Windows error codes can vary by operation and version. Match the complete message, Windows build and update or driver involved, then follow the diagnostic order on this page before attempting a disruptive recovery.
Related guides
Need help narrowing it down?
Error still repeats?
Keep the full code, update/driver name and the step that failed available.