Startup program entry details:

DXDllRegExe (dxdllreg.exe)

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

Not required or not recommended - typically infrequently used tasks that can be started manually if necessary

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

Description:

Registers with Windows the DLL (Dynamic Link Library) files that are part of Microsoft DirectX9. Created when you select "Yes" to check the "WHQL Digital signatures" in the DirectX9 files at the first time you open it after a manual installation or after a new application is installed that also installs DirectX9. This entry should only appear once and can cause boot error messages if it remains so remove it

Startup information:

Registry (Start → Run → regedit)

• Key(s): HKLM\Run
• Name: DXDllRegExe
• Data: C:\WINDOWS\system32\dxdllreg.exe

MSConfig (Start → Run → msconfig → Startup)

• Startup Item (XP): dxdllreg
• Startup Item (Vista/7): N/A
• Command: C:\WINDOWS\system32\dxdllreg.exe

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

• Name: Microsoft® DirectX for Windows® Operating System
• Startup Value: C:\WINDOWS\system32\dxdllreg.exe

HijackThis (HJT) log examples:

O4 - HKLM\..\Run: [DXDllRegExe] C:\WINDOWS\system32\dxdllreg.exe

Other information:

• File location: %System%
• File properties "Description": Microsoft DirectX DLL Register
• Purpose: DLL registration
• Program disable option: None
• Shortcut(s) available: Start Menu, Desktop & Quick Launch (both optional)
• Vendor/Publisher: Microsoft Corporation
• Product(s): DirectX 9, various applications
• Tested: Yes

Note:

• %System% - refers to the System folder; by default this is C:\Windows\System (9x/Me), C:\Winnt\System32 (NT/2K), or C:\Windows\System32 (XP/Vista/7)
• HKLM refers to HKEY_LOCAL_MACHINE

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