"App not installed" when trying to install APK

Question

I'm trying to install an apk file on my device, and I'm able to press the Install button, but after a few seconds, I keep receiving this error:




App not installed.




What is the root cause of this issue and how can I fix it?



I know this StackOverflow question is related, but that question deals more with the development aspect than the consumer installation aspect of the error.


— fi12 | Sources

Answer

I figured it out myself. The issue was that I had another version of the same application I was trying to install already on my device. After deleting it, the installation worked fine.


— fi12 | Sources

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