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I have an existing android application which is written in Xamarin Android. when I Adhoc distribute the APK I am able to install the APK on an emulator. However when I try to install the apk on a device I get the following error

Starts installing and then Application cannot be installed. USB debugging enabled and allow application from unknown sources is enabled.

My project properties look like this

Application enter image description here enter image description here

Package signing is blank i.e, default

When I do build acrhive and save the apk. I can take the apk and run on an emulator on a different machine however when i try to install the apk on a device it fails with error 'Application not installed'

I am really new to this guys, any help is greatly appreciated. I bet i am missing something simple.

Abe
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  • silly question, but do you have enough space on your device? Also what Android device do you have? I know LG has issues with being able to deploy on it. – Woj Apr 29 '19 at 10:20
  • That's ok no question is a silly question imao. Yes, I am using Android OS 9 Samsung. I tried it on Andoroid 8 and same issue but emulator OS 8 and OS 9 no issues. – Abe Apr 29 '19 at 10:27

2 Answers2

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You should sign your APK. Unsigned APK cannot be installed on the real device. Check here how to sign Xamarin Android app.

Luka Pejovic
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  • Yes i have already done this. Thank you. I managed to get it working see my answer. – Abe May 02 '19 at 11:54
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I figured it out guys. You have to go into play store settings and click play protect and settings. Disable the slider and the app installs.

Abe
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