Version 11.0.4 is not compatible with Windows 7. Please upgrade to RU 5 or newer.
RU6 MP1 is the latest version available.
Release Update 5 (RU5)
Symantec Endpoint Protection Manager now supports the following operating systems:
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- Microsoft Windows Server 2008 Service Pack 2 (all editions except for Itanium)
- Microsoft Windows Server 2008 R2 (all editions except for Itanium)
Symantec Endpoint Protection Manager can now be used with Microsoft SQL Server 2008.
The Symantec Endpoint Protection or Symantec Network Access Control client now supports:
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- Microsoft Windows 7 (all editions except for Itanium)
- Microsoft Windows Server 2008 R2 (all editions except for Itanium)
- Microsoft Windows Vista Service Pack 2
http://www.symantec.com/business/support/index?page=content&id=TECH103087&locale=en_US
Best,
Thomas