Consider the following scenario that takes microsoft exchange server 2013 as an example:
- The Mailbox server role is enabled in exchange server 2013.
- Exchange mailboxes use extended MAPI to communicate with the Exchange Server.
- The extended MAPI uses Microsoft rpc over http (remote procedure call over http) protocol.
- Many clients (such as mobile devices) are dropping connections to the Exchange Server.
In this scenario, the CPU usage on the Exchange server may reach 100 percent.\
Hotfix: https://support.microsoft.com/en-us/hotfix/kbhotfix?kbnum=3041832&kbln=en-US