I had no idea that I was this reckless, i have opened more than 18 concurrent shells on this server. This is the latest error exchange 2010 decided to throw back at me. What does it mean? Well the answer is also straight forward. You have 18 powershell windows running under your username in your environment. You are probably asking yourself, 18 concurrent shells, who in the world put 18, why 18.



So what do we do?

Honestly I don't know why 18, but I know its default number defined in your throttling policy.



1. Increase your PowershellMaxConcurrency value
2. Create a new Throttling policy with higher value for PowershellMaxConcurrency and assign it to your user
3.Close the  unused Powershell shell