ActiveSync is the protocol used by phones (iPhone, Android, Touchdown, Windows Phone, etc.) to communicate with Exchange mailboxes. Windows Mail, on Windows 8 and Windows 8.1 and Windows 10 also use this protocol.
Your high value indicates either that people have a LOT of ActiveSync clients or your server is under-provisioned. From: [email protected] [mailto:[email protected]] On Behalf Of Eric Brouwer Sent: Tuesday, July 21, 2015 8:56 AM To: [email protected] Subject: [Exchange] High number of MSExchange ActiveSync\Current Requests Greetings, I am not an Exchange Admin, but I play one at work from time to time when they need help. I am trying to help tune our monitoring system (SolarWinds), and Exchange 2013 is alerting on high numbers of MSExchange ActiveSync\Current Requests. According to TechNet, this shows the number of HTTP requests waiting to be assigned to a thread, and the threshold should average 50-100. We routinely go over 200. Based on this, I have two questions: 1) What is this counter actually telling me? What are these HTTP requests? 2) Why would they be so high? We have a small environment; less than 150 users. Thanks, Eric
