Highly recommended; it verifies the digital signatures of every file to ensure they are authentic and haven't been tampered with.
Before installing a manual APK, remove any corrupted or partial updates: Google Play Services Apk Download For Android 4.4 2
This occurs when multiple Google apps (like Play Store, Gmail) have different signature keys. You must: Highly recommended; it verifies the digital signatures of
Google Play Services is a system app that provides a range of services to Android apps, including: Modern versions of Google Play Services are with this OS
Android 4.4.2 (KitKat) is a legacy operating system version. Modern versions of Google Play Services are with this OS. To restore functionality to a device running Android 4.4.2, users must locate and install a specific legacy version of the Play Services APK (typically version 6.6.03 or similar). Installing the latest version will result in a "Parse Error" or installation failure.
Because the Google Play Store might not update automatically on older versions, you can manually download the APK from trusted repositories: APKMirror - Google Play Services 23.30.13 : The last stable build for Android 4.4+ (API 19). Uptodown - Google Play Services