Can I use WhatsApp Web without my phone connected to the internet?
: Point your phone’s camera at the QR code displayed on your Mac screen. whatsapp web mac os 10157 link
The native app uses a different networking stack than your browser and almost never triggers error 10157. Can I use WhatsApp Web without my phone
The version of Safari bundled with macOS 10.15.7 may throw a "Browser Not Supported" error on WhatsApp Web. If you encounter this, you must switch to a third-party browser like Chrome or Firefox, as Safari cannot be updated independently of the macOS. 3. Mozilla Firefox whatsapp web mac os 10157 link
Ensure your third-party browser is running its final supported version for Catalina.
allows you to download version 26.21.17 or older.