Cannot add a member to a private channel

[JamesN]

I have a Team and created a private channel. I can add any member of the team but one particular member. He's an admin of team. I tried removing and re-adding him to team but still I cannot see him in the list to add to the private channel. Can you help?

[#2 · Accepted solution]

Hello, sounds like the old bug but obviously still there. What you've done is usually enough, removing from team and then adding again. There are some workarounds for the issue as you can tell from this UV request (see comments as well).
https://microsoftteams.uservoice.com/forums/555103-public/suggestions/39418315-bug-inconsistency-in-...

[#3]

Yay I can add him using mobile device.
Thanks for the trick

[#4]

Great, glad to help. Please mark the above as best response for future reference.

[#5]

I'm experiencing the same issue. I cannot add a new member to a private channel. It shows the member not found. Same as the thread started in 2019.