I am Android novice and I had an app on my Nexus 5 (not rooted) and I uninstalled it by going to Settings->Apps->MyApp->Uninstall. That completed successfully.
Then I wanted to install same app .apk, so I did it from adb by issuing adb C:\MyDir\MyApp.apk and I got the error:
C:\MyDir>adb install MyApp.apk 4542 KB/s (2795833 bytes in 0.601s) pkg: /data/local/tmp/MyApp.apk Failure [INSTALL_FAILED_UPDATE_INCOMPATIBLE]
I goggled a bit and everyone suggests that the app did not uninstall properly but I can not go back to Settings->Apps->MyApp since MyApp is not showing there any more. However, I tried issuing adb uninstall but I get failure DELETE_FAILED_INTERNAL_ERROR. I guess I get this error because MyApp is already uninstalled.
Much appreciated,