Fix INSTALL_FAILED_UPDATE_INCOMPATIBLE When Installing Android APK via ADB
Fix INSTALL_FAILED_UPDATE_INCOMPATIBLE When Installing Android APK via ADB After building your React Native Android release APK, you may encounter this error when installing it: adb: failed to install app-release.apk: Failure [INSTALL_FAILED_UPDATE_INCOMPATIBLE: Existing package signatures do not match newer version] This means the APK was built successfully, but Android refuses to install it because the app on your device was signed with a different certificate. Why This Happens Android requires that any update to an existing app must be signed with the same keystore as the original installation. Typically this happens when: You installed a debug build previously You switched keystores for your release build You changed your signing configuration If the signatures don’t match, Android will block the installation. How to Fix It Option 1: Uninstall the Existing App (Quick Fix) adb uninstall com.westminstershortercatechismqa adb install app-release.apk Onc...