'Open with...' pops up when trying to use program

i tried searching, so i hope this isn't answered and is in the right place, but i made a program in visual basic 2008 which was working completely fine when i finished it. i uploaded it online for others to download, which has also worked fine for them for several months. as of late, some users have reported that when they try to use the program, the 'open with...' window pops up because windows does not recognize the program needed to run my application. yet...it works fine on my PC, and most others (that i assume that have not redownloaded it causing this error to occur). i instruct the users to update their .NET framework in the original forum post to the latest update which was previously required for my application to work, but the issue still arises.

regardless of all my searching, i haven't found a solution. or any issues that are even similar to mine. i'm a beginner programmer (only one semester in visual basic) and that was over a semester ago, so i'm hoping it is an easy fix i'm not aware of or am overlooking. thanks in advance for any help :)

Do the users run the .exe, or do they click on an other file?

The fact that the "open with" dialog pops up when your user is trying to launch your program tells me that windows doesn't have a file association with that file. Since it's a program, it's an executable. If Windows doesn't know what to do with an .exe then nothing can run at all, not just your program. So it's likely that the program executable got renamed to a different extension (or no extension at all), and thus windows doesn't know how to open it, and thus the "open with" dialog comes in place.
Solution: make sure that the file extension is ".exe". If not, rename it to have the .exe extension.

thank you for the timely responses. it has the .exe extension on my pc, but that can't be said for all users. it should be downloaded with the same extension, but i will ask some of the users that contacted me about it and see if that's what works and i'll report back :)

one user already posted that it works. thanks for the help!