Solved missing my extension

[Reane]

Hello,
I do have a program about thermique insulation for houses by the name of Lesosai, with the extension .bld for the files.
my computer suddenly don't use Lesosai to open these files, and suggest me only DLL to open it, and if I want to modify the recommended program, I do have Adobe, or a few program, but Lesosai has disappear from the list, and if I want to choose another default program the check box is shaded...
Thanks if you can help

 

[iko22]

Hello Reane, welcome to Seven Forums.



I am not entirely sure what you have tried already, but I understand that you are having a problem with File Association. You may wish to follow this tutorial, Open With - Change Default Program. It provides a guide on how to create a File Association, when a Program is not listed in the Context Menu.

1. To begin, Right-mouse Click on any .bld file, in Windows Explorer, and select Open with from the dropdown menu.

2. The Open with Option expands into a list of programs that you can use to open your file.

3. If the program you are looking for is not in this list of programs, then you can choose the last option, Choose a Default Program. Your program should be in the list of Other Programs. If you have searched this list, and the program is not there, then select Browse ... , and navigate to the programs .exe file, located in its installation directory.

 

[Reane]

Hello,
Thank you for your answer.
I tried to do so already, but my program lesosai does not appear, and when I browse to find it at the bottom, I cannot check the box "use the selected program to open this type of file", because it is shaded...

 

[iko22]

Hello Reane,

If you find that you cannot select "Always use the selected program to open this kind of file" box, because it is greyed out, then you may try either of these solutions, which involve modifying the computer's Registry. Here are the steps:

Method 1
Open the Start Menu Search Box, and type Regedit. Select Regedit from list.
In Regedit, use the Directory Tree in the left pane Window, to navigate to the subkey

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer​

In the right side of the screen (right pane Window), double click on "NoFileAssociate".
Change the value of "NoFileAssociate" from 1 to 0.
Exit the registry editor and restart the computer
Method 2
Open the Start Menu Search Box, and type Regedit. Select Regedit from list.
In Regedit, use the Directory Tree in the left pane Window, to navigate to the subkey

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts​

Scroll down and find the file extension .bld (the problem file extension).
Expand it to view its sub keys.
Find a sub key called "UserChoice" and delete it.
Exit the registry editor and restart the computer

Happy Computing

 

[Reane]

Woaw, beautiful!!!!
Thank you so much!!!
The second solution worked GREAT!!!! I'm SO HAPPY!!!!
THANK YOU and have a great day...mine is perfect