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Windows 7: Remove file extension's default program association

23 Jan 2016   #1

Windows 7 Pro x64
Remove file extension's default program association

I wanted to look at and edit a .dll file using Notepad, but I accidentally forgot to uncheck "Always use the selected program to open this kind of file." So now Notepad is associated with .dll files.

I've tried completely removing the registry values under
  • Computer\HKEY_CLASSES_ROOT\.dll
  • Computer\HKEY_CURRENT_USER\Software\MS\Win\CurrVer\Explorer\FileExts\.dll

but for some reason .dll files still have Notepad as the default program! Any ideas?

It's not a big deal, just incredibly irritating.. Why are file extensions so difficult to manage in Win7??

Attached Images
Remove file extension's default program association-dll-extension.jpg 
My System SpecsSystem Spec
23 Jan 2016   #2

Windows 10 Pro X64

Follow Brink's tutorial here: Default File Type Associations - Restore
My System SpecsSystem Spec

 Remove file extension's default program association

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