Can't add guest account to Teams

[px091]

I am the owner of a Team. I can add an internal user. But when I try to add external user, I got the error "  We didn't find any matches" Maybe the Teams don't have permission to invite guest?   

Thanks in advance

[#2 · Accepted solution]

You need to be able to invite users to the tenant first, which depends on how your admins have configured things. Read here: https://docs.microsoft.com/en-us/microsoft-365/solutions/collaborate-as-team?view=o365-worldwide