Group distribution list not updated

[Falck1705]

Hallo,

I am admin at my workplace's office 365.

I am trying to make a distribution list for my workplace. 

There is an old group with members in it. The group is made as a "Distribution list group". 

The members in that group needs to be changed. I've tried it. But it does not seem to work in practice.

It is still sending to the old members. I have no clue as what i am doing wrong.

Hope you can help 

[#2]

@Falck1705 

Do you have AD on prem?

[#3]

Hi @Falck1705, please try navigating to Exchange Admin Center > Groups. You should be able to see the Distribution List, select it, and modify membership.