The Official SBS Blog: SVCHOST May Spike the CPU

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[Today's post comes to us courtesy of Damian Leibaschoff, Justin Crosby and Chris Puckett ]

You may notice an issue where the Windows Update (WUAUSERV) service will be spiking one of the logical CPUs on servers running Exchange 2007 with automatic anti-spam updates turned on. This will include any SBS 2008 installation where Forefront for Exchange was installed as part of the setup.  Please note that the service displayed will by SVCHOST, since WUASERV runs inside SVCHOST.EXE.

Read rest of the post here:

https://blogs.technet.com/sbs/archive/2009/04/25/svchost-may-spike-the-cpu.aspx