Windows form application messed up all applications on pc

I recently made a windows form application in visual studio, but after installing this file it has changed the target type of every single executable on my computer to a different name and now nothing will open apart from chrome, whenever I open task manager through ctrl alt delte the application comes up instead, can someone please help as this has just seriously messed up my computer! cheers!

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Sounds like what System Restore was made for.

That's my first step back.

After that, your backups. As an app developer you know about backups.

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Re: application

- Does system restore work?
- Can you go back to a recent image?
- Didn't this happen on your development machine?
- Does the exe-fix from help?

Other questions:
- what exactly was "installing"?
- did you only "install" it, or did you run it also?
- are you sure it isn't caused by a virus that happened to come at the same time?
- can you reproduce it by deploying to another machine (be sure to make an image to go back to first, and disconnect from Internet)
- what is the "target type of an executable"?
- what's the difference between the type and the name of the type?

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