Apple released macOS Catalina (10.15.7) back in 2020. Over time, developers update their software to use newer system tools. WhatsApp Help Center details that they dropped support for Catalina because the app now runs on a completely new framework optimized for newer macOS versions.
If notifications still do not show up, check your system settings:
This comprehensive guide covers everything you need to know about using WhatsApp Web on macOS 10.15.7. It provides setup instructions, browser compatibility steps, performance optimizations, and workarounds to make the browser experience feel like a native desktop app. Why WhatsApp Web is Required on macOS 10.15.7
Because WhatsApp Web works as a secure mirror of your mobile device, it does not require a system installation. WhatsApp for Mac
If you ever decide that the web version does not meet your needs, you can also explore third-party chat aggregators like , Station , or Rambox , which compile WhatsApp Web and other services into a unified interface optimized for older systems.
: By using Chrome or Edge's "Install site as app" feature, you can open WhatsApp in its own window without browser tabs, address bars, or clutter.
. However, you can still fully access WhatsApp using the web-based alternative or specific browser features to mimic a desktop experience. JustAnswer Primary Solution: WhatsApp Web