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Memory usage of lsass.exe increases when the Security Agent is running

    • Updated:
    • 8 Sep 2017
    • Product/Version:
    • Worry-Free Business Security Standard/Advanced 7.0
    • Platform:
    • Windows 2003 Standard
    • Windows 2008 Enterprise
    • Windows 2008 Essential Business Server
    • Windows 2008 Small Business Server
    • Windows 2008 Standard
    • Windows 2011 Small Business Server Essentials
    • Windows 2011 Small Business Server Standard
    • Windows 7 32-bit
    • Windows 7 64-bit
    • Windows Vista 32-bit
    • Windows Vista 64-bit
    • Windows XP Home
    • Windows XP Professional

NOTE: You are viewing an archived article because the product(s) tagged is no longer supported or the information mentioned is already outdated.


When the Security Agent is running, the process lsass.exe's memory usage increases. The issue disappears when the Trend Micro Solution Platform service is disabled.

When you identify when the issue happened and check the Internet Information Services (IIS) logs for that period, you find the 401.1 error for port 8082 requests, like the one below:

2011-12-08 14:23:35 GET /tmcss/ LCRC=9C4E654146B6CBFA4E9DFE0CD913B3B85A0753D5E20A5BA903B68F53C506AD69 8082 - WFBS;17.0;2316;a4f71263-504c-4cd3-b77a-f378ba2f79d5;4f337fbe-07a8-484a-9ed8-5eead0877b7f;Af9CAWBk 401 1 0

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