How to fix App not installed error in Android
This is usually caused when you have a debug apk that is signed with a different certificate and you are trying to install a release version with a different certificate. If you have a debug apk on the device try uninstalling it and try again.
App not installed error when using app center distribution for android
I was running into this issue with an App Center build on a Galaxy S8. I had tried uninstalling the app, restarting the phone and toggling the allow Unknown Sources switch, but the thing that fixed it for me was turning off Play Protect in the Google Play store. While previous builds had asked me to bypass Play Protect, this build just gave me the "App not installed" error.
To turn Play Protect off:
- Open the Play Store
- Tap the menu in the top left
- Tap
Play Protect - Turn off
Scan device for security threats
You'll probably want to turn this back on if you're using a personal device.
App not installed android studio
I changed complileSdkVersion to 28 and now it's installs fine.
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