Windows – How to associate all unknown file types with notepad++

file associationnotepadwindows

I work alot with billing and files the bank etc. send me files that have date extensions or some counter as an extension:

eg file1.20110315 or file2.123

So the extension changes every time I receive another file.

Is it possible to associate all file types that end in numbers or if not any unknown file types with notepad(++)?

Thanks

You can edit the openas command of the Unknown type, i.e.

HKEY_CLASSES_ROOT\Unknown\shell\openas\command.

Alternatively, you can add a new command if you want to keep the Open As command.

If you want to make Open with Notepad++ the default, edit the default value of the HKEY_CLASSES_ROOT\Unknown\shell subkey.

Use Ftype & Assoc to fix this (and it is scriptable).

Use Assoc to get the filetype

>Assoc .txt

gives you:

.txt = txtfile

Then

>Ftype txtfile=C:\Program Files (x86)\Notepad++\notepad++.exe %1

Once you know the file type you can use Ftype to associate it with an action.

This would work for .php files (just plop them in a batch file)

Assoc .php=phpfile
Ftype phpfile="C:\Program Files (x86)\Notepad++\notepad++.exe" %1

And you can copy these lines to add other text-based files as you would like.

Go to Settings -> Preferences and remove any Registered exts:

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