| Previous | Next |
| WININET_E_REDIRECT_FAILED | WININET_E_UNABLE_TO_CACHE_FILE |
WININET_E_SECURITY_CHANNEL_ERROR
WININET_E_SECURITY_CHANNEL_ERROR is a WinINet HRESULT. It means that WinINet could not complete an operation that depends on the Windows secure channel, usually TLS. The underlying cause can be a protocol mismatch, unsupported cipher suite, certificate issue, broken interception proxy or system cryptographic configuration.
What to check
- Record the target host, TLS protocol and available Schannel or Windows Event Log diagnostics without exposing secrets.
- Verify the server certificate chain, supported TLS versions and cipher suites from an independent client.
- Check proxy inspection, enterprise roots and operating-system updates before weakening TLS validation.
Looking for a different code? Search another status or error code.