Go to Start >> Run and type %temp%

Look for the file called SEP_INST.log and open up and search for "return value 3"

Copy about 20-25 lines above and paste here. That should contain the error as to what is happening.

Follow

MSI (s) (98:E4) [13:27:21:500]: Executing op: ActionStart(Name=AddCacheAsInstallSource,,)
MSI (s) (98:E4) [13:27:21:500]: Executing op: CustomActionSchedule(Action=AddCacheAsInstallSource,ActionType=3073,Source=BinaryData,Target=AddCacheAsInstallSource,CustomActionData={F4A73EC6-EFC4-488D-AF1A-F2C3CD1BC072};C:\Documents and Settings\All Users\Application Data\Symantec\Symantec Endpoint Protection\12.1.1101.401.105\Data\Cached Installs\)
MSI (s) (98:74) [13:27:21:532]: Invoking remote custom action. DLL: C:\WINDOWS\Installer\MSI2A8.tmp, Entrypoint: AddCacheAsInstallSource
MSI (s) (98:D0) [13:27:21:844]: Running as a service.
MSI (s) (98:54) [13:27:21:860]: Opening per-machine managed SourceList.
MSI (s) (98:54) [13:27:21:860]: User will be allowed to modify contents of SourceList.
MSI (s) (98:54) [13:27:21:860]: Added new source 'C:\Documents and Settings\All Users\Application Data\Symantec\Symantec Endpoint Protection\12.1.1101.401.105\Data\Cached Installs\' with index '2'
MSI (s) (98:E4) [13:27:21:860]: Executing op: ActionStart(Name=StartServices,Description=Starting services,Template=Service: [1])
AddCacheAsInstallSource Successfully added C:\Documents and Settings\All Users\Application Data\Symantec\Symantec Endpoint Protection\12.1.1101.401.105\Data\Cached Installs\ as source dir for {F4A73EC6-EFC4-488D-AF1A-F2C3CD1BC072}
MSI (s) (98:E4) [13:27:21:860]: Executing op: ProgressTotal(Total=1,Type=1,ByteEquivalent=1300000)
MSI (s) (98:E4) [13:27:21:860]: Executing op: ServiceControl(,Name=SepMasterServiceMig,Action=1,Wait=1,)
MSI (s) (98:E4) [13:27:38:297]: Executing op: ActionStart(Name=ShowServiceProgress_RB,Description=Executing rollback script via service,Template=[1])
MSI (s) (98:E4) [13:27:38:297]: Executing op: CustomActionSchedule(Action=ShowServiceProgress_RB,ActionType=3329,Source=BinaryData,Target=ShowServiceProgress_RB,CustomActionData={8E19EC70-F82A-411B-9AC2-0C96EDBFF802};SOFTWARE\Symantec\Symantec Endpoint Protection;Executing rollback script via service;)
MSI (s) (98:E4) [13:27:38:297]: Executing op: ActionStart(Name=ShowServiceProgress,Description=Executing install script via service,Template=[1])
MSI (s) (98:E4) [13:27:38:297]: Executing op: CustomActionSchedule(Action=ShowServiceProgress,ActionType=3073,Source=BinaryData,Target=ShowServiceProgress,CustomActionData={8E19EC70-F82A-411B-9AC2-0C96EDBFF802};SOFTWARE\Symantec\Symantec Endpoint Protection;Executing install script via service;)
MSI (s) (98:3C) [13:27:38:329]: Invoking remote custom action. DLL: C:\WINDOWS\Installer\MSI2A9.tmp, Entrypoint: ShowServiceProgress
ScriptGen: ShowServiceProgress() MSIRUNMODE_SCHEDULED
ScriptGen: ShowServiceProgress() calling WaitForSingleObject(scriptStarted) ...
ScriptGen: ShowServiceProgress() WaitForSingleObject(scriptStarted) returned WAIT_OBJECT_0
ScriptGen: ShowServiceProgress() script execution failed.
ScriptGen: ShowServiceProgress() reset script failure event.
ScriptGen: ShowServiceProgress() is returning an error (so close to the end!)
MSI (s) (98:E4) [13:27:38:750]: User policy value 'DisableRollback' is 0
MSI (s) (98:E4) [13:27:38:750]: Machine policy value 'DisableRollback' is 0
Action ended 13:27:38: InstallFinalize. Return value 3.

Thanks,

Hi,

You should go through the following articles.

About client deployment methods

http://www.symantec.com/docs/HOWTO81302

Steps to prepare computers to install Symantec Endpoint Protection 12.1 client

http://www.symantec.com/docs/TECH163112

How to prepare computers for remote deployment

http://www.symantec.com/docs/HOWTO16365

Preparing Windows operating systems for remote deployment

http://www.symantec.com/docs/HOWTO81300

Installing Symantec Endpoint Protection clients remotely

http://www.symantec.com/docs/HOWTO59432

Remote Installation Troubleshooting

ftp://ftp.symantec.com/public/english_us_canada/products/symantec_endpoint_protection/11.0/manuals/mr4/remote_troubleshoot.html

My windows xp stations was with MSI installer version 3.5, than I upgraded to version 4.5 and now SEP is installing.

Thank you!