The WS-Management service cannot process the request. The user load quota of 1000 requests per 2 seconds has been exceeded. Send future requests at a slower rate or raise the quota for this user. The next request from this user will not be approved for at least X milliseconds.
I had this issue just a couple of times in Exchange 2010, but when it happens it’s a pain as you can’t run a single powershell command against exchange. Most of the resolutions I found online talked about increasing some policies or making changes in AD.
None of this is required (or at least I wouldn’t start making any change until I tried all of the soft-changes), what helped me fix the “The WS-Management service cannot process the request” problem was to restart IIS. You can do that by running a command prompt with elevated rights and type:
Note: if you have a monitoring system or load balancers that notify your entire team when HTTP/HTTPS go down, IISRESET will send in an alert.