upgrading an existing zoom meeting if the attendance gets too big - does the same zoom login work?

[amandacordano]

Hi there - I am wondering if I set up a Zoom meeting and we get too many people registered, can I upgrade the meeting to a webinar and still use the same Zoom meeting ID or do I have to change it for everyone who already has the original Zoom meeting id?

[aileenfelix]

When converting from meeting to webinar, the meeting/webinar ID will remain the same, but the registration link will change slightly. Conveniently, the old registration link will automatically redirect users to the new registration page to avoid any confusion by those who may open the first registration page. Those who have already registered can still join with the same link as before, and meeting settings and registrants will also be transferred to the webinar. 

Please see this support article for your reference: https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0067900