I'm working with a fresh install of Azure AD Connect, version 1.5.45.0. The service is in staging mode and hasn't performed any initial exports.
I've manually performed a full import/full sync of all connectors. On full import, the Azure AD connector is only getting back 28 out of 400+ users that I know exist in Azure AD. In other words, a full import doesn't appear to be seeing everything that exists in Azure AD, just a small subset of users. The 28 users that do show up on Full Import don't seem any different from the hundreds that aren't coming on the full import.
The 28 accounts that do come back successfully join to on-prem accounts as I would expect.
However, I have hundreds of pending "export adds" to Azure AD for users that are already there. In other words, it feels that if I send the export I will have a bunch of duplicates on my hands.
What could be the problem? It seems to me that the full import isn't working properly since it is only seeing 28 out of 400+ users.
Any advice is appreciated.