Trouble sharing folders with people outside our organization

Question

I'm having trouble setting up folder and file sharing with people outside our organization. 

I am trying to share a subfolder, not the entire folder tree. I'm the primary admin for the organization. 

Within the Sharepoint Admin center this is what I see: 

And this is what I'm seeing when I try to share a folder: 

On the previous screen, I set "share the link with" to "People you choose"

But you can see that I can't choose "Anyone" in the previous screen.

Answer 1

I suggest you check the site settings (SharePoint Admin Centre > Active Sites), in particular the guest settings there as they are likely blocking the sharing.

In your case, you probably need to set them to "new and existing guests".