Where does this notification come from?

[TasJac]

[#2]

Those are system generated messages telling you about ended meetings (these in the General channel).

[#3]

hi there,

yes, but if we dont have meetings out of the General channel, how do they get generated?

[#4]

So no one in the team has started any meetings? Does look a bit odd with no other info attached to the posts. Perhaps best open a support ticket with Microsoft.

[#5]

ok...thank you!