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Windows 7: How do you revert a filetype back to unknown..?


29 Jul 2010   #1

Windows 7 Home Edition 64-bit
 
 
How do you revert a filetype back to unknown..?

Hi, I've accidently set another .cnf filetype to be known, as well. It's just so aggravating to see them have an icon as if they're good to open..how can I make them to open with nothing once again..?




My System SpecsSystem Spec
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29 Jul 2010   #2
Microsoft MVP

Windows 8.1 Pro with Media Center 64 bit
 
 

I believe you have to remove or edit the file type association that ties that file type to a program. if you type "file type" or "change file type" in the search bar you should find the place to do it.
My System SpecsSystem Spec
29 Jul 2010   #3

Windows 7 Home Edition 64-bit
 
 

I tried and it only wants me to specify a program, I can't leave it unknown..
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29 Jul 2010   #4

64-bit Windows 8.1 Pro
 
 

Default File Type Associations - Restore

This will allow you to restore the default registry entries and program associations for the Windows 7 file extension type of your choice.
My System SpecsSystem Spec
29 Jul 2010   #5

Vista 64 Ultimate, Windows 7 64 Ultimate, Ubuntu 9.10
 
 

CNF is a Telnet Configuration File. The only association it has it to Telnet.
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29 Jul 2010   #6

Windows 7 Home Edition 64-bit
 
 

Ohk. I've got .sav and .CNF I'd like to restore to unknown. The .CNF are in all my PS1 games and .sav are some saves. The .CNF I had done by mistake, as I checked Properties and hit Enter thinking it was to hit Ok and made it for Adobe Reader..
My System SpecsSystem Spec
29 Jul 2010   #7

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
 
 

1) To remove a file type association, you can use a great utility found on winhelponline.com. It has a GUI.

http://www.winhelponline.com/downloa...&articleId=231

2) I believe you can do it from the command prompt also with the "assoc" command. See this page for complete instructions.

How to Unassociate File Types and Remove File Extension Associations in Windows Vista My Digital Life
My System SpecsSystem Spec
29 Jul 2010   #8

Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

I've just subscribed to this thread in the hope that i will learn what it is all about. Anyone help me understand what "how can I make them to open with nothing once again" means. I'm a bit lost here!
My System SpecsSystem Spec
29 Jul 2010   #9

Windows 7 Ultimate
 
 

Quote   Quote: Originally Posted by mitchell65 View Post
I've just subscribed to this thread in the hope that i will learn what it is all about. Anyone help me understand what "how can I make them to open with nothing once again" means. I'm a bit lost here!
You know when you try to open a file that Windows doesn't recognize, it asks you how you would like to open it by bringing up a list of programs to choose from? Well, OP would like to restore the file's behavior to that, right now it opens up with Adobe.
My System SpecsSystem Spec
29 Jul 2010   #10

Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

Quote   Quote: Originally Posted by Kirsch View Post
Quote   Quote: Originally Posted by mitchell65 View Post
I've just subscribed to this thread in the hope that i will learn what it is all about. Anyone help me understand what "how can I make them to open with nothing once again" means. I'm a bit lost here!
You know when you try to open a file that Windows doesn't recognize, it asks you how you would like to open it by bringing up a list of programs to choose from? Well, OP would like to restore the file's behavior to that, right now it opens up with Adobe.
Thank you, now I understand!
My System SpecsSystem Spec
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 How do you revert a filetype back to unknown..?




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