How to fix error rpc-s-binding-has-no-auth in Windows 11

Solution Steps

1. 1 Press Windows key + R, type 'services.msc', and press Enter. Look for the service that is failing (you may see it in the error message or in Event Viewer). Right-click it and select 'Properties'. Go to the 'Log On' tab and ensure 'This account' is set to 'Local System Account' or a valid domain account with appropriate permissions. This ensures the service has the right identity to authenticate RPC calls.
2. 2 Press Windows key + R, type 'dcomcnfg', and press Enter to open Component Services. Navigate to Component Services → Computers → My Computer → DCOM Config. Find the component related to the error (you may need to search online for the specific CLSID). Right-click it, select 'Properties', and go to the 'Security' tab. Ensure that 'Launch and Activation Permissions' and 'Access Permissions' include the appropriate users or groups (like 'Everyone' or 'Administrators'). This sets the authentication level for DCOM components.
3. 3 Press Windows key + R, type 'regedit', and press Enter. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Ole. On the right, look for 'DefaultAuthenticationLevel'. If it doesn't exist, right-click, select New → DWORD (32-bit) Value, and name it 'DefaultAuthenticationLevel'. Set its value to 1 (which means 'None') or 2 (which means 'Connect') depending on your needs. This sets the default authentication level for DCOM calls. Be cautious: setting it too low can weaken security.
4. 4 Restart the service that was failing. In Services, right-click the service and select 'Restart'. If the error persists, restart the computer to apply all changes.
5. 5 If the error is related to a specific application, check the application's documentation for RPC configuration. Some apps have their own authentication settings that need to be adjusted.