WhatsApp Web does not work on Firefox – QR Code not loading

browserfirefoxwhatsapp

When I open web.whatsapp.com in Firefox (67.0.4, Win10) the QR code is not loaded. At the same time it does work in Chrome.

What I tried:

  • Reload
  • Clearing the cache
  • switch off add blocker
  • about:config privacy.resistFingerprinting = false

What I found:

  • Also a bug is described here but no solution. Unfortunately bug is closed https://bugzilla.mozilla.org/show_bug.cgi?id=1468870#c11
  • In the browser console I see the following errors: Firefox kann keine Verbindung zu dem Server unter wss://web.whatsapp.com/ws aufbauen. (~Firefox could not establish a connection to server)

screenshot

Best Answer

I experienced this issue after upgrading to Firefox 71 (Ubuntu 18.04 + Firefox 71), https://web.whatsapp.com stopped working, and the QR code don't load either.

Doing a Refresh Firefox worked (click on menu, Help/Troubleshooting Information, then click on Refresh Firefox...).

Also tried settings this options in about:config but it didn't work for me.

network.http.spdy.websockets = false
privacy.resistFingerprinting.autoDeclineNoUserInputCanvasPrompts = false
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