All, enclosed is the Zoom Root Cause Analysis (RCA) of the issue encounter between 17 and 21 UTC on 20241022. The effect of the issue was that users on a subset of sub-accounts could not start/join meetings and instead received 3010 errors. The issue was triggered when NORDUnet was doing planned maintenance on a Zoom Zone, removing that Zone from all sub-accounts. Zoom had recently deployed a new security feature that had a flaw which then returned a completely empty Zone list to these sub-accounts, that then had no active Zoom Zone to connect to. The workaround was to disable the security feature which restored operations. A fix has been deployed that permanently has resolved the problem. Full Zoom RCA enclosed. NORDUnet regrets the problems encountered due to this. Brgds, Jørgen Qvist Please read NORDUnets Data Protection Policy - https://nordu.net/privacy-policy/ & Legal Notice - https://nordu.net/legal-notice/ _______________________________________________ Mediagroup mailing list -- mediagroup(a)lists.nordu.net To unsubscribe send an email to mediagroup-leave(a)lists.nordu.net