Applies to: Exchange Server 2010 SP3, Exchange Server 2010 SP2

Topic Last Modified: 2012-07-23

You can disable Microsoft ActiveSync. When you disable ActiveSync on a Microsoft Exchange Server 2010 Client Access server, you disable the application pool ActiveSync uses. An application pool is a group of processes that Internet Information Services (IIS) uses to perform a task. For more information, see Understanding Exchange ActiveSync.

Looking for other management tasks related to Exchange ActiveSync? Check out Managing Exchange ActiveSync.


  • The IIS component ASP.NET is installed.

  • The ASP.NET Web service extension status is set to Allowed, not Prohibited. You can verify the status of the ASP.NET Web service extension in IIS Manager by expanding the server name and then clicking Web Service Extensions. If the ASP.NET Web service extension isn't set to Allowed, right-click the Web service extension to change the status.

Use IIS Manager to disable Exchange ActiveSync

To perform these steps you must have Local Administrator permissions on the Client Access server.

Click Start, click Administrative Tools, and then click Internet Information Services (IIS) Manager.

  1. Double-click to expand the server name, and then double-click to expand the Application Pools folder.

  2. Right-click MSExchangeSyncAppPool, and then click Stop to disable ActiveSync.

If the Stop command is unavailable, ActiveSync is already disabled on this server.