Thanks for leaving a review, if there's any error message you can type it here, and i will see what I can do about it.
Viewing post in Backrooms: Nightmare jam comments
Try to run it as administrator or download one of these https://learn.microsoft.com/en-us/cpp/windows/latest-supported-vc-redist?view=msvc-170 , if the game still won't open then it might be a computer issue.