Medium
Operating Systems
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Error Code rpc-s-unknown-authn-service — Windows 11
RPC_S_UNKNOWN_AUTHN_SERVICE = 1747
Oprava založena na komunitních zprávách a expertní analýze. Naposledy ověřeno: 2026-08-12
· Jak ověřujeme opravy
| Error Code | rpc-s-unknown-authn-service |
|---|---|
| Affected System | Windows 11 (Microsoft) |
| Difficulty | Medium |
| Estimated Time | 15 min |
| Requires Admin Rights | ⚠️ Yes |
| Requires Reboot | 🔄 Yes |
Postup řešení
- 1 Press Windows key + R, type 'regedit', and press Enter. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa. Look for the 'Authentication Packages' value. Double-click it and ensure that the list includes 'msv1_0' and 'tspkg'. If not, add them. This ensures the standard authentication packages are available.
- 2 Press Windows key + R, type 'services.msc', and press Enter. Find the service that is failing and check its dependencies. Right-click it, select 'Properties', and go to the 'Dependencies' tab. Ensure all dependent services are running. If any are stopped, start them. This ensures the RPC infrastructure is fully operational.
- 3 If the error is from a specific application, check if it requires a specific security package. You may need to install or enable that package. For example, if it requires Kerberos, ensure the Kerberos service is running.
- 4 Restart the computer to ensure all changes take effect.
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