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Startup program entry details:

osCheck (osCheck.exe)

This page expands upon the information already available for this entry in the Pacman's Portal Windows start-up programs database.

User's choice - depends whether a user deems it necessary

For further information on how to identify and disable startup programs please visit the Introduction page.


Part of older versions of Symantec's security products including Norton 360 (now Norton Security Premium), Norton Internet Security (now Norton Security Deluxe), Norton AntiVirus (now Norton AntiVirus Basic) and the now discontinued Norton SystemWorks suite. Checks at boot-time to see if you are still using the same OS as your last Windows session and terminates if you are. If Windows has been upgraded it will attempt to download the relevant updates for the new OS on the first reboot

Startup information:

Registry (Start → Run → regedit)

MSConfig (Start → Run → msconfig → Startup)

Windows Defender (Start → All Programs → Windows Defender → Tools → Software Explorer)

Log examples:

O4 - HKLM\..\Run: [osCheck] "C:\Program Files\Norton 360 Premier Edition\osCheck.exe"
O4 - HKLM\..\Run: [osCheck] "C:\Program Files\Norton 360\osCheck.exe"
O4 - HKLM\..\Run: [osCheck] "c:\Program Files (x86)\Norton 360\osCheck.exe"
O4 - HKLM\..\Run: [osCheck] "C:\Program Files\Norton AntiVirus\osCheck.exe"
O4 - HKLM\..\Run: [osCheck] "C:\PROGRA~1\Symantec\osCheck.exe"
O4 - HKLM\..\Run: [osCheck] "C:\Arquivos de programas\Norton 360\osCheck.exe"
O4 - HKLM\..\Run: [osCheck] "C:\Programas\Norton Internet Security\osCheck.exe"
O4 - HKLM\..\Run: [osCheck] "C:\Programmi\Norton Internet Security\osCheck.exe"

Other information:


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