“Always use the selected program to open this kind of file” is gray

How can I enable “Always use the selected program to open this kind of file” option in Open With dialog box?


Sorry for this reply I realise this topic has been asleep for 3 months but I have recently discovered how to fix a similar problem on my PC and hope it will do the same for the original poster.

First off, are you sure it affects files of All types? I find it unlikely you have checked them all so I am hoping this fix will work for you.

Open Regedit.exe
Navigate to the following subkey
Scroll down and find the file extension you are having problems with (for me it was .sln).
Expand it to view its sub keys.
Find a sub key called "UserChoice" and delete it.

Repeat steps 3 to 5 for each file extension causing you problems.
For me the “UserChoice” contained a key called “Progid” and its value was “Applications\vbexpress.exe”. This was causing all of my .sln files to open with vbexpress.exe and Windows would not let me choose an alternative program (I wanted it to open with Studio2010). This problem had plagued me for a week before I finally found the above fix lol. Hope this helps.

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