When you try to connect to the WSUS 3.0 server from the WSUS Console, you may receive the below error message:
Connect to Server - Cannot connect to '<Server Name>'. The server may be using another port or different Secure Sockets Layer setting.
This issue can occur if the Enable-32bit mode is set to true for WSUS Application Pool.
To resolve this issue, follow these steps:
1.) Open IIS Manager
2.) Expand Server Name -> Application Pools
3.) Select the WSUS Application Pool (WsusPool) and click Advanced Settings under the Actions pane.
4.) Change the value for Enable 32-Bit Applications to False.
5.) Run IISRESET /noforce
SBS 2008; WSUS; ApplicationPool; 32bit