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Unable to install Symantec Endpoint Protection 12.1.2 or 12.1.3 Win32-bit Client

Created: 21 Jul 2013 • Updated: 22 Jul 2013 | 4 comments

Hi Support,

I have tried to install Endpoint Protection 12.1.3 Win32-bit Client with help from Anila (Symantec Technical Support) into Windows Server 2003 R2 Enterprise Edition but failed @ Network Protection

But old Endpoint Protection 11.7 is working fine for Windows Server 2003 but not in 12.1.2 and 12.1.3

Why ?

Thanks & regarding


Operating Systems:

Comments 4 CommentsJump to latest comment

Sumit G's picture

What the error message?

Share the Sep_inst.log from %temp%


Sumit G.

ᗺrian's picture

Post the SEP_INST.log file located in %temp% directory.

Does running the SymHelp tool show any errors?

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Mithun Sanghavi's picture


Could you please PM me your Case #?

Windows 2003 R2 is fully supported with SEP 12.1 RU2 and SEP 12.1RU3.

Could you help us with the SEP_Inst.log file from the server machine?

Till that time try the following steps:

Check this Article:

Steps to prepare computers to install Symantec Endpoint Protection 12.1 client


1) Open registry and go to 

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\

hight light Session Manager on the right hand side delete the value PendingFileRenameOperations

2) Also delete the same value from 

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet001\Control\Session Manager\PendingFileRenameOperations

then run the install...without rebooting the PC


Hope that helps!!

Mithun Sanghavi
Associate Security Architect


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