Error: The WS-Management service cannot process the request.

Problem:

You cannot install the software because of the error message:

The WS-Management service cannot process the request. The system load quota of 1000 requests per 2 seconds has been exceeded. Send future requests at a slower rate or raise the system quota. The next request from this user will not be approved for at least 1991904000 milliseconds. For more information, see the about_Remote_Troubleshooting Help topic.

Fig. 1. Error message.

Solution:

This error is caused by probably temporary communication problems with your IIS server. There are three possible solutions to that:

Be aware that you may consider scheduling the below restarting operations for after the office hours to avoid server downtime during the day.

1. Restart the whole machine.
2. Restart your IIS server running below command in the windows command line (recommended).

   iisreset

3. Or restart MSExchangePowerShellAppPool in the Application Pools tab in Internet information services (IIS) Manager (alternative option).

   
   Fig. 2. Restarting MSExchangePowerShellAppPool.