Exchange EMC

Running EMC would cause this:

Connecting to remote server failed with the following error message: The WinRM client cannot process the request. It cannot determine the content type of the HTTP response from the destination computer. The content type is absent or invalid. For more information, see the about_Remote_Troubleshooting Help topic. 

Tried every single thing I could find on google, set winrm maqxrequests, reinstall exchange, reinstall winRM, spent 12 hours. 

My solution (issue was caused by wsus messing with dynamiccompression module)

%windir%\system32\inetsrv\appcmd.exe set config -section:system.webServer/httpCompression /-[name='xpress']