In my last post I described how to turn on External Sharing of Files and Folders within Microsoft Teams, during which you may have noticed the Anyone option was disabled.
Anonymous users are users who have a shareable link to a folder or document and can view or edit the document or upload to the folder (depending on the type of link) without having to log in with a username or password. Anonymous links can be freely passed around between users and are valid until you disable them or they expire (if you’ve set an expiration date).
Anonymous users cannot access sites, and you cannot assign them licenses. They can only view or edit the specific document or folder for which they have an anonymous access link.
Microsoft currently do not offer a way to turn on the Anyone option using the User Interface. However, it can be enabled using PowerShell, which I share below.