![]() ![]() ![]() André on Linux - Resize-Extend a disk partition with unallocated space (CentOS, Ubuntu, VM).Mehran Hoodeh on Office Interop DCOM Config on a Windows Server IIS Machine to open Word, Excel and Access files with ASP.NET C#.Mark on MS Office - Error 0xc0000142 on Excel and Word - Fix.Rayne Bair on HTTP Error 500.30 - ASP.NET Core app failed to start - Solution.Tauta on Mantis BT CustomContent plugin - add custom PHP, HTML, CSS and JS files in Mantis HTML Layout.The fix for such scenario is to apply both of these signatures, by selecting the two checkboxes - just like shown in the following screenshot: As you might easily guess,older phones with older android versions don't support the new v2 signature versions, hence they will raise the "app not installed" error if the APK only contains that one. By default, Android Studio 2.2 and the Android Plugin for Gradle 2.2 sign your app using both APK Signature Scheme v2 and the traditional signing scheme, which uses JAR signing - meaning that they give the option to sign the APK with either a JAR signature (aka v1) or a full APK sign (aka v2): to be more specific, during the process of building the app the developer is asked to choose between using one or these signature version, none or both of them. ![]() As you can read here, Android 7.0 "Nougat" introduced the APK Signature Scheme v2, a new app-signing scheme that offers faster app install times and more protection against unauthorized alterations to APK files. This workaround should be the first thing to try if you're using older phones and/or Android builds <= 6. Unsupported v2 Signature (aka Full-APK Signature) Here's a couple solutions I've come with, mostly thanks to the following StackOverflow thread. APK and/or uninstalling the app's previous version (if any) seems to fix the issue. It also goes without saying that neither rebooting the phone and/ or removing the existing. That's not the best documented error you can hope for, isnt'it? What makes things ever worse is the fact that the APK is most likely working on other devices, including the Android emulator you (or the developer) just tested it with. Are you an Android developer or tester? Do you often play with APK files coming from "insecure sources" such as signed APKs built with Android Studio? In case you do, you might likely experience the following problem when trying to install those apps: ![]()
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