Applies to:

Windows Server 2012 R2

Windows Server 2012

Windows Server 2008 R2

Windows Server 2008


For those of you that started in the Windows 2000 Server Active Directory, there was a tool called ADPerf (Active Directory Performance) to troubleshoot high CPU utilization in LSASS.exe.

Starting with Windows 2003 Server, there was a new tool called Server Performance Advisor to troubleshoot the high CPU utilization.

In Windows Server 2008 and Windows Server 2008 R2, the functionality was added to Perfmon as a “Data Collector Set” described in:

2550044 How to Troubleshoot High LSASS.EXE CPU Utilization on an Active Directory Domain Controllers


SPA for AD is back, as of SPA v3.1 with the AD Advisor Pack has been released to the web: 



In a future post, I’ll go over about the install and how to utilize the tool to troubleshoot your high CPU utilization in LSASS.exe.