You are likely on a build older than 2.24.9.73. Sideload the latest APK. If that fails, your device may have already been flagged by Meta’s servers as end-of-life.
You might find websites offering “WhatsApp latest version for Android 4.4.4” as an APK file. Here’s what will likely happen: whatsapp latest version android 4.4.4
Use sites like (owned by Android Police). These are safe because they use cryptographic signatures matching the official release. You are likely on a build older than 2
If you successfully install a working version of WhatsApp on Android 4.4.4, you will have a you will have a