"App Not Installed" on android studio

[Android Central Question]

I have created a sample android project of the hello world application.
Then, I ran it on physical device using adb it works fine, but when I generated the an apk file of that application that file didn't get installed.
I have tried clean and rebuilding, downgrading the version, using a signed apk and uploading the application to play store. The issue still persists though.

Can anyone let me know what caused the issue and how can I fix it?

Thank You

 

[B. Diddy]

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