Still Cannot Bulk Add People or Groups in Team/Channel in 2026

Six years is fair to be annoyed about. Three options that work today.

Nested groups is the real fix. Build a security group with everyone you need, then add that group to the team instead of adding people one at a time. Membership propagates, and anyone you add to the group later gets inherited automatically without touching the team again.

PowerShell if you'd rather script it. Connect-MicrosoftTeams, then loop Add-TeamUser against a CSV of UPNs. Handles hundreds in about a minute, and you don't need admin rights as long as you're a team owner.

The Teams admin center under Manage teams is slightly faster than the client, but it's still one entry at a time. Not really a bulk fix.

It's on the feedback backlog with plenty of votes, but after six years I'd treat nested groups as the permanent answer rather than waiting for a native import.