What is the live identifier?

What is the new live identifier it is possible to get from players?

ex. live:1899946022673717


I know it’s in the identifiers, I just don’t know what it refers to.

I’m sure someone will correct me if I’m wrong, but probably something related to your MS account and windows 10 games stuff(?).

This has been an identifier for a few weeks/months now iirc. Same as xbl:<id>.

most recent identifier that was added is discord:<discord id>

live: is the Microsoft account PUID (Passport Unique Identifier, after the original name of the Microsoft account service - Passport) for the currently-signed-in Xbox account. Some people have Xbox accounts without having activated Xbox Live, so they won’t have an XUID.