M365 Department Sync - Users Missing/Dropping Nightly.

jstevenslb

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Apr 2, 2026
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Hello,

We have recently began standing up 3CX for our environment. It has gone mostly fine, but we I have a single sticking point.

At my company, we are across various sites. For each site, I have setup a "Voice" group in 365 to sync those users into 3CX. This group would allow us to keep user organized by location, etc.

The problem I am facing --

With my current imported users, I have two users in two separate 365 Groups (Location 1 Voice, Location 2 Voice) who keep getting dropped from their matching 3CX Department Nightly.

We are not yet in full production with this system yet but I would like to get ahead of this before it becomes a larger issue. The user accounts are present in the groups (through both a Microsoft Graph query and Microsoft GUI lookup in the Admin Center) when they lose their group in 3CX. I manually reassign the users to their department in 3CX, but then it drops again the next morning.

What steps can be taken here to remediate this issue?
 
Hello,

I see you have installed the SP9 Alpha release. Was this issue presenting itself on SP8 if you recall?
 
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Apologies on the late response to this.

We did not have this integration live before implementing the newest update so I cannot speak to that as of right now.
 

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