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The order of which applications are loaded and where they are loaded from:

1. config.sys
2. autoexec.bat
3. wininit.ini
4. winstart.bat
5. system.ini
6. win.ini
   [Windows]
   Load=
   Run=
7. All Users-RunServicesOnce
   [HKEY_LOCAL_MACHINE \Software \Microsoft \Windows \CurrentVersion \RunServicesOnce]
8. All Users-RunServices
   [HKEY_LOCAL_MACHINE \Software \Microsoft \Windows \CurrentVersion \RunServices]
9. All Users-RunOnce
   [HKEY_LOCAL_MACHINE \Software \Microsoft \Windows \CurrentVersion \RunOnce]
10. All Users-Run
    [HKEY_LOCAL_MACHINE \Software \Microsoft \Windows \CurrentVersion \Run]
11. All Users-RunOnceEx
    [HKEY_LOCAL_MACHINE \Software \Microsoft \Windows \CurrentVersion \RunOnceEx]
12. All Users-RunEx
    [HKEY_LOCAL_MACHINE \Software \Microsoft \Windows \CurrentVersion \RunEx]
13. Current User-RunOnce
    [HKEY_CURRENT_USER \Software \Microsoft \Windows \CurrentVersion \RunOnce]
14. Current User-Run
    [HKEY_CURRENT_USER \Software \Microsoft \Windows \CurrentVersion \Run]
15. Current User-RunOnceEx
    [HKEY_CURRENT_USER \Software \Microsoft \Windows \CurrentVersion \RunOnceEx]
16. Current User-RunEx
    [HKEY_CURRENT_USER \Software \Microsoft \Windows \CurrentVersion \RunEx]
17. Common Startup Folder in the Start-Menu for All Users
18. Startup Folder in the Start-Menu for Current User

More Info MS KB Q137367
More Info MS KB Q174018
More Info MS KB Q179365
More Info MS KB Q232487
More Info MS KB Q243039

Note if one of the Run-sections includes an invalid entry (Uses a path that doesn't exist), then Windows might open at folder at startup. Use Startup.CPL or Msconfig to check the entries.

Related Use SHIFT-key to prevent launch of 6-18

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