Solution:
We made a startup script (bat-file) using GPO to uninstall with SEPPrep and there after install SEP.
echo off
IF %PROCESSOR_ARCHITECTURE% == x86 (
GOTO Bit32
) else (
GOTO Bit64
)
:Bit32
Echo "This is 32 Bit Operating system"
reg query "HKLM\software\Panda Security"
if NOT %errorlevel% == 0 ( goto install32 )
start /wait "sep prep" "\\servername\appinstall$\PC_WIN32BIT_Small\SEPPrep.exe" /s /v /qn
:install32
reg query "HKLM\software\symantec\symantec endpoint protection"
if %errorlevel% == 0 ( goto exit )
\\servername\appinstall$\PC_WIN32BIT_Small\setup.exe
goto exit
:Bit64
Echo "This is 64 Bit Operating System"
reg query "HKLM\software\WOW6432Node\Panda Security"
if NOT %errorlevel% == 0 ( goto install64 )
start /wait "sep prep" "\\servername\appinstall$\PC_WIN64BIT_Small\SEPPrep" /s /v /qn
:install64
reg query "HKLM\software\symantec\symantec endpoint protection"
if %errorlevel% == 0 ( goto exit )
\\servername\appinstall$\PC_WIN64BIT_Small\setup.exe
:exit
echo END
This solved our problem.
// Alexander