Windows 10: How To Associate app for Files With No Extension

Win 10 v1903. I get files from an app and these files do not have an extension. I can open and read them via Notebook but I'd like to assign Notebook to open them when I double click the file name.

Can that be done in Win 10?

-- Larry

:)

 

Remove (not change) file extension association

I mistakenly associated a file extension with .pdf. I've found many instructions on how to change (swap) the file associate from one extension to the other, but how do you remove the association completely and return it to "Choose a default" ??

This user was very helpful (How to UNSET/REMOVE a default app for file type).

I took the suggested steps above and it removed the association but didn't return it to "Choose a default" ... this has caused a thumbnail app to work for every file EXCEPT the ones i mistakenly associated, then did the work around on. This is affecting
productivity as I'm working with over 1,000 files (and growing). Since 145 people said they had the same question, please Microsoft, can you answer or solve this problem? Please help. Thanks.

 

Can a file extension(.flv) be added to Default Program Associations.

Hi Fred,



Thank you for posting your query on Microsoft Community.



I understand that you are facing issues associating a particular file extension with a program on Windows 10. I apologize for the inconvenience caused to you.

To assist you better, please provide the information:

When you say that "Default Program Associations", are you referring to the list of default applications in default programs settings?



I want you to be informed that all the file extensions is listed in the default program settings which is displayed under
Associate a file type or protocol with a program.



In default program list, all the programs or application will be listed. Then we can select each program as default program for opening a particular file.

I suggest you to refer to the below steps to make default program for a particular file extension.

1. Type "Control Panel" without the quotes in search box and click on it.

2. Click on Programs.

3. Then click on Default Programs and click on Choose Default for this Programs.

4. Select .flv file from the list.

Also you can try other steps to associate the a particular extenstion with the program.

1. Type "Control Panel" without the quotes in search box and click on it.

2. Click on Programs.

3. Then click on Associate a file type or protocol with a program
and search for .flv extension from the list.

4. Click on .flv and then click on Change Program.



Reply to us with the information, so that we can assist you better.

Let us know if you need any further assistance on Windows related issues and we will be glad to help.

 

File extension not in file association list


Hello, I use Notepad++ to edit Python files which have the file extension .py such as "sample.py"

I would like to set Notepad++ as the default program to open .py files.

When I open a .py file I get the popup asking me which file I want to use to open. But I do not get the choice to set the default program to open this extension.

When I go to Settings|Choose Default Apps By File Type the .py extension is not listed.

Looking through the registry I see that there is no .py handler.

Q: What is the method to manually add a file extension and associate it with a program?

Thanks!