| Previous | Next |
| WU_E_NOT_SUPPORTED | WU_E_TOO_MANY_RESYNC |
WU_E_WINHTTP_INVALID_FILE
WU_E_WINHTTP_INVALID_FILE means the HTTP response content did not match what Windows Update expected for the requested file. It can result from a proxy error page, captive portal, authentication page, or wrong content served by an intermediary.
How to investigate
- Check the HTTP status, headers, and response body path at the proxy or content server for the exact request time.
- Verify that security gateways do not replace update payloads with HTML block, login, or error pages.
- Confirm that the configured update endpoint and proxy bypass rules apply to the system update context.
Microsoft: Windows Update error reference
Microsoft: Windows Update proxy selection
Microsoft: Windows Update log files
Looking for a different code? Search another status or error code.