Yes, Microsoft Teams meeting registration links can expire based on the settings chosen by the meeting organizer. When creating a meeting in Microsoft Teams, the organizer has the option to specify an expiration date for the registration link.
If the organizer sets an expiration date, the registration link will become invalid after that date, and participants will no longer be able to register for the meeting using that particular link. In such cases, if someone tries to access the expired registration link, they will likely receive an error message indicating that the link has expired or is no longer valid.
It's important to note that the expiration of registration links is a configurable setting, and organizers can also choose not to set an expiration date. If no expiration date is specified, the registration link will remain active until the meeting occurs or until any other changes are made to the meeting settings.