Hello,
I don't know but somehow my exchange 2010 EMC does not work anymore. Also OWA is also down.
The error message says "connecting to remote server failed with the following error message: the WinRM client received an HTTP status code of 303 from the remote WS-management service. for more information, see the about_remote_troubleshooting help topic. It was running the command 'Discover-ExchangeServer-UseWIA $true-suppressError $true''.
I already tried removing WinRM IIS extension feature and added it back. Also performed iisreset command.