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Windows 7: COMPLETELY unassociating extensions from default Open With programs

18 Jul 2013   #11
Tho1528

Windows 7 Home Premium 64bit
 
 

Quote   Quote: Originally Posted by Brink View Post
To unassociate the .pkg file extension, you would actually be deleting the .pkg key on the left side at those 3 registry locations below.

If you wanted to unassociate a different file extension, then you would substitute .pkg in the locations below with the other file extension instead to delete. :)


Code:
[-HKEY_CLASSES_ROOT\.pkg]

[-HKEY_CLASSES_ROOT\SystemFileAssociations\.pkg]

[-HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.pkg]

I have read about deleting those keys, but they say that it will completely wipe the .pkg extension from your device (any .pkg file). Is that true?


My System SpecsSystem Spec
.
18 Jul 2013   #12
Brink

64-bit Windows 10 Pro
 
 

It will unassociate .pkg files so that they will no longer have a default program assigned to open them with.
My System SpecsSystem Spec
19 Jul 2013   #13
Tho1528

Windows 7 Home Premium 64bit
 
 

Quote   Quote: Originally Posted by Brink View Post
It will unassociate .pkg files so that they will no longer have a default program assigned to open them with.
Well, ok, I'll try to delete the .fsb keys in these 3 locations.
Could you explain how I make a backup of these keys, just in case if anything goes wrong?
My System SpecsSystem Spec
.

19 Jul 2013   #14
Brink

64-bit Windows 10 Pro
 
 

Sure thing. You would right click on the key, and click on Export to save it as a .reg file before deleting it. If something goes wrong, you could just double click on the exported .reg files to merge it back.

In addition, you could also create a restore point first that includes the complete registry. If something undesired happens, you could do a quick system restore to go back to that restore point. :)
My System SpecsSystem Spec
25 Jul 2013   #15
Tho1528

Windows 7 Home Premium 64bit
 
 

Sorry for my late answer, I was very busy at my Summer student's work.
So, I'm trying to backup/export the 3 .fsb keys you gave as example to me, before deleting them.

[-HKEY_CLASSES_ROOT\.fsb]
[-HKEY_CLASSES_ROOT\SystemFileAssociations\.fsb]
[-HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.fsb]

However, I cannot find the second key [-HKEY_CLASSES_ROOT\SystemFileAssociations\.fsb]
(Nor can I find the .pkg inside SystemFileAssociations, but that is because it has already been restored to default maybe?)

What should I do if it isn't present? Just ignore it and continue deleting the 2 other keys?
My System SpecsSystem Spec
25 Jul 2013   #16
Brink

64-bit Windows 10 Pro
 
 

Hello Thomas,

No worries. If the file extension isn't listed at each of the 3 locations, then it's already not associated with a program. You are basically just checking each location to see if an entry is there to be deleted if not already. :)
My System SpecsSystem Spec
25 Jul 2013   #17
Tho1528

Windows 7 Home Premium 64bit
 
 

Ok deleting the .fsb keys worked. The .fsb extension is now completely unbound. Thank you for all your assistance during this topic, Brink.
Does taking this action require any system restart?
My System SpecsSystem Spec
25 Jul 2013   #18
Brink

64-bit Windows 10 Pro
 
 

You're most welcome. Since it's showing as not associated now, there wouldn't be any need to restart the PC. :)
My System SpecsSystem Spec
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 COMPLETELY unassociating extensions from default Open With programs




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