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I am using an iMac with Big Sur.
I am no longer able to sign in.
When I try it simply returns to the sign-in screen with no error message.
Using Firefox I do not have any issues.
I have tried clearing the cookies.
Hey @SteveWA, have you tried using incognito mode? I've been using the Chrome browser and a MacBook with Big Sur to log in to zoom.us and haven't had any issues. Are you on the latest version of Chome or tried to uninstall/reinstall the Chrome application to see if that resolves any issues?