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What is syminstallstub.exe?

Part of SymInstallStub by Symantec

What is it?

SymInstallStub is part of Norton Antivirus by Symantec Corporation and is responsible for handling installation of components of Norton and its various products. The SymInstallStub helps installation and manages install failures should they occur. In addition SymInstallStub will run on startup via a scheduled task or startup file run entry should Symantec Norton products need to survive reboot.

What if I disable SymInstallStub?

If Disabled while Symantec Norton products need to be installed, installation might not complete all the way. However if the Norton product was installed properly SymInstallStub does not need to autostart.
Description of syminstallstub.exe from Symantec
Norton AntiVirus, developed and distributed by Symantec Corporation, provides malware prevention and removal during a subscription period. It uses signatures and heuristics to identify viruses. Other features include e-mail spam filtering and phishing protection. Norton AntiVirus has been criticized for refusing to uninstall completely, leaving unnecessary files behind.
Download Boost and enjoy your PC. Remove SymInstallStub and optimize your PC.

How is syminstallstub.exe loaded?

Startup files (all users) run once - syminstallstub.exe is registered with the run identifier 'SymInstallStub' and the execution command 'C:\DOCUME~1\user\LocalS~1\Temp\SymInstallStub.exe /partnerid=realnw /productlist=nss /staging=false /delay=5 /affid=RPLR /desktopshortcut=1 /startmenushortcut=1 /runoncelaunch /tasktries=1' in the Windows registry HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce. RunOnce keys are used to launch a service or background process whenever a user logs into Windows. Once the application is launched for the first time its entry will be removed from the Registry so it does not run again when the user logins again. Applications here are designed to be used primarily by Setup programs.
Scheduled task - syminstallstub.exe is launched automatically by registering itself into the Windows Task Scheduler under the task name 'C:\WINDOWS\Tasks\SymInstallStub.job'. Task Scheduler provides the ability to schedule the launch of programs or scripts at pre-defined times or after specified time intervals or even with event-based triggers.


What is the community is seeing?What is the community is doing?
About 0.2% of all Boost users have the syminstallstub.exe file.Of the 0.2% of syminstallstub.exe users, 70.0% have disabled it.
Typical file (disk image) location:
C:\Documents and Settings\user\Local settings\temp\syminstallstub.exe

Are there other versions of SymInstallStub?

What else is related?

What Windows OS versions does this run on?

Microsoft Windows XP (5.1.2600.196608)
Windows 7 Home Premium (6.1.7601.65536)

About Symantec Corporation

Symantec provides security, storage and systems management software for business and individual use. The company helps customers protect their information, iden More...
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File details

File name: syminstallstub.exe
Publisher: Symantec Corporation (verified)
Name: SymInstallStub
Description: SymInstallStub
Product version: 3.5
Size: 327.91 KB
Original file name: SymInstallStub

Digital certificate

Certificate authority: VeriSign
Expiration date: 11/24/2010

Startup files (all users) run once details

Name: SymInstallStub
Command: C:\DOCUME~1\user\LocalS~1\Temp\SymInstallStub.exe /partnerid=realnw /productlist=nss /staging=false /delay=5 /affid=RPLR /desktopshortcut=1 /startmenushortcut=1 /runoncelaunch /tasktries=1

Scheduled task details

Name: Norton Product InstallerIdle
Command: C:\WINDOWS\Tasks\Norton Product InstallerIdle.job

Image hashes

MD5: b073ca0abc2ef5746f2f1a83920d6346
SHA-1: c0c9fc990a3624265f1950601f4e345ed9dc7b10

PE image details

File packed: Yes
Packed by: Unknown
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