There is currently an issue with Windows 8.1 Update preventing interactions with WSUS 3.2 over SSL connections. If you run a local WSUS server you can:
- Disable https
- Enable TLS1.2 on the server
- Wait for an update from Microsoft
For more information and links see;
NB: The UIS WSUS server (WSUS.csx.cam.ac.uk) has TLS 1.2 enabled.