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I found a thread on Reddit discussing the same issue. I also found a solution to the problem (most likely a temporary one, but still). The issue is related to devices using OCLP, which typically have older processors that don’t support newer instructions. As a result, newer versions of applications don’t work on them. The solution is:

1) Download the old version (2.24.25.94) - https://web.whatsapp.com/desktop/ma...on=zip&configuration=Release&branch=relbranch

2) After downloading the 'old' version, you should FIRST right-click on the downloaded file in Finder. Then under 'Get Info' set the 'locked' checkmark

3) Сopy this 'locked' older version over the 'new' Whatsapp file in your Applications folder. After starting it up go to the 'WhatsApp / Check for updates' menu item and turn off automatic updates AND skip the update.

It's work for me! Thanks to @HetTuinhekje from Reddit
This does not work for me. When I launch Whatsapp I get the option to upgrade or quit. Running a 2013 MacPro.
 
This does not work for me. When I launch Whatsapp I get the option to upgrade or quit. Running a 2013 MacPro.
Just got the same message and so problem : WA forces you to upgrade, claiming my version is too old. After updating, it doesn't work anymore.
I fear it is a dead-end, forcing us to use the web page, and no more the application... :(
 
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This does not work for me. When I launch Whatsapp I get the option to upgrade or quit. Running a 2013 MacPro.
So you might have missed one of the steps described or not have deleted your previously installed version including all of it's dependencies before?

But the version seems to work for only three more days anyway. It then will expire.
 
Worked until this morning, now I'm stuck in the update loop again.12.7.6 on a late 2013 Pro.

Very annoying.
Same here on Mac Pro with Monterey (others with Sequoia idem). Uninstall everything cleaned all run Malware etc, try reinstall last version. Sent error to Apple which is unresponsive.
 
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I have updated to WhatsApp 25.3.80 and it still crash on launch in macOS Sequoia 15.3.1. What's going on in WhatsApp ? Did there is NO one else using the macOS version in their team ?
 
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