macOS Catalina (version 10.15.7) remains a popular operating system for many Mac users who, for various reasons (software compatibility, hardware limitations, or personal preference), have chosen not to upgrade to macOS Big Sur, Monterey, Ventura, or Sonoma.
WhatsApp frequently updates its desktop clients. As of 2026, the official WhatsApp Desktop app for macOS requires macOS 11 (Big Sur) or newer. If you try to download the app from the official website or the Mac App Store on Catalina, you will likely see a greyed-out download button or an error message stating: “Requires macOS 11.0.0 or later.” whatsapp web mac os 10.15.7
WhatsApp Web is a browser-based version of the popular messaging app WhatsApp. It allows you to access your WhatsApp account on your computer, making it easy to send and receive messages, photos, and videos on a larger screen. WhatsApp Web on macOS 10
WhatsApp Web on macOS 10.15.7 is alive, stable, and surprisingly effective – if you use the browser version. The standalone desktop app is a dead end on this OS. For text chats, media sharing, and voice notes, the web client delivers 95% of the experience. The only major missing pieces are voice/video calls and the very latest cosmetic features. WhatsApp Web makes it easier to manage group
web.whatsapp.com, right-click the page → Settings for This Website → Notifications → Allow.Before we dive in, make sure your Mac meets the system requirements:
While having a dedicated App Store app feels "cleaner," the Web version has distinct advantages for older Macs: