Exchange 2013, CU6, CAS3 X MBX4

I'd like to get the active users' connection(count) t server, please tell me how to do powershell command

And how to check them by using resource monitor.

This can be handy:

https://technet.microsoft.com/en-us/library/dd876852%28v=exchg.150%29.aspx?f=255&MSPPError=-2147217396

Get-StoreUsageStatistics

Hi,

We can use Get-counter cmdlet to get real-time performance counter data from local and remote computers:

Owa
Get-Counter "\MSExchange OWA\Current Unique Users" -ComputerName cas3

RPC
Get-Counter "\MSExchange RpcClientAccess\User Count" -ComputerName cas3

ActiveSync
Get-Counter "\MSExchange ActiveSync\Current Requests" -ComputerName cas3

Here is the similar thread for your reference:

https://social.technet.microsoft.com/Forums/office/en-US/aa693a3e-ddc2-48ed-998f-ba646bb11efa/exchange-2013-how-to-count-number-of-connection-to-server?forum=exchangesvradmin

Regards,