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Question by shrapnel92 · Jun 01, 2014 at 11:35 AM · android

Android .apk built from Unity3D 'App not installed' error on device

I searched around a lot before asking, on this website and others, I've found a lot of advice but I either can't fully understand it, or I'm implementing it wrong. I build my .apk from Unity3D, and then I put that on Google Drive and using ASTRO File Manager on my Galaxy Tab 2 10.1 (GT-P5110) I launch it and install it, it says 'installing' for a short amount of time and then it just tells me 'App not installed'.

Most of what I've read is telling me that it wont work if it's an unsigned build, but to start with I was using the debug option in Unity's Publishing Settings, and now I've generated a new keystore, rebuilt it, got it back over on the device and the same thing is still happening.

Am I missing some critical concept or step here? I'm brand new to Android development and it's taken me a while to get to this stage, so if there's something I'm missing that is glaringly obvious then please help me out!

Thanks in anticipation!

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Answer by BadSeedProductions · Oct 12, 2018 at 08:53 PM

For me I got passed this error by uninstalling the app first.

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avatar image gmgoraj · Nov 04, 2019 at 09:35 AM 0
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Yeah, I've had this same problem, app was still not unistalled correctly from play store. After uninstall it from there I was able to install my developer build of app.

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Answer by shrapnel92 · Jun 01, 2014 at 02:49 PM

SOLVED: I followed the advice here, and it fixed my problem!

http://forum.unity3d.com/threads/210920-Failure-INSTALL_FAILED_CONTAINER_ERROR

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avatar image niraj · Aug 29, 2014 at 01:07 PM 0
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@shrapnel92: Thank you so much for helping. It worked and my problem solved finally after a lots of search :)

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Answer by hubatish · Apr 06, 2015 at 02:05 PM

This seems to be caused by a lot of different things. To get a more helpful error message, I was able to use Build & Run. That caused Unity console to show a better error which led me to finding I had decreased the version number.

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