| Issue | Solution | |-------|----------| | “Proxy trust cannot be removed because the server is still reachable” | Ensure the WAP server is offline or firewalled from AD FS. Then use Remove-ADFSWebApplicationProxy -Force . | | Event 250: “WAP server failed to unregister” | Manually delete the service connection point in AD using ADSI Edit (CN=Web Application Proxy, CN=Service Connection Point). | | Load balancer still sends traffic | Double-check load balancer configuration and clear any connection persistence/cookies. |