Rather than typing the meeting ID into the entry bar character by character, it's best to copy it from the invitation and paste it directly into the bar.

The number one reason you are likely to have issues joining a Zoom meeting is the wrong meeting ID. but then he shouldn't be able to get into his account. User's account was canceled by the admin.Any links send out might need to be updated to the ones in the current Meeting invitation. The organization may have recently created a 'vanity' URL through Zoom, such as, but the original links sent out used the generic domain.I've seen multiple instances where a Zoom user has mangled up the URL somehow, either by sending only a partial URL, accidentally typing into the middle of it, or one user did a 'find and replace' function that also changed part of a link.If the meeting does start, then something has happened to the meeting URL that was sent out. If the meeting doesn't start then, I'm not sure what to tell you other than to log a Support Ticket: I'd first recommend that the user log into Zoom.US into the meetings list, and assuming that the meetings are still here, start one from the Start link on the web page.

How to fix invalid meeting id in zoom