0x800c0005 — Download error while opening a streamed file The file could not be read from the stream it came from.
Work through these in order
- Re-download the file
- Clear the cache entry
- Verify the size and checksum before opening
If the same code appears after a Windows update, the driver and permission pages here are worth a read before you reinstall anything: drivers, error codes.
R. Okonkwo re-read this on 2026-10-05.
Before changing anything
The code above is what an application reports; it is not a diagnosis of what went wrong. Two checks are worth doing before permissions are touched: whether the file is on a volume the application can actually reach, and whether the file was moved or renamed since it was last opened. Both report as this code more often than a permission problem does.
Pages in this section describe the code as applications report it. Where a fix is listed here, it is one the library has seen work on a real file; where nothing has been confirmed, the page says so instead of guessing at a cause.