Unable to search for new users

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Occasional Contributor

Hi

 

I've noticed that since September, users aren't able to search for any new users. Whether its typing a name into the TO box on Outlook Web App or searching for them in Office 365 Groups, new users created over the summer just don't appear. I can't figure out why. I, as an admin account, don't have the issue. But normal teachers and students are struggling. 

 

Anyone know why as I'm at a loss. 

 

Thanks

5 Replies
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I'd be curious to know if you have a different Address Book Policy created [Get-AddressBookPolicy] should return empty if you haven't created a new one).

Also:

1. Compare the AddressListMembership parameter ["(Get-Mailbox <user>).AddressListMembership"] between your account and one of the affected user accounts

2. ["Get-OrganizationConfig | select HierarchicalAddressBookRoot"] to verify if there's a HAB created

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Could be. To my knowledge though we don't but the o365 tenancy was setup very strangely. I'll give those commands ago. PS isn't my strongest skill though. 

Thanks

N

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Hi
So I've run them commands and found some interesting things out.

The first Get-AddressBookPolicy command shows that I have 5 address books. These were setup before I started at the school though so I'm not sure where they are located or how to change them.

The second command I ran for myself and a user that is not showing up when searched for. We both had the same outcomes but they were in different orders though. IE I had the Default Global Address List at the top of the results, where as the other user had it at the bottom. I don't really know what that means though.

The last command i guessed would show me the hierachy of the address book and answer my question from the 2nd command. But it displays lots of data that I don't know much about.

I had a friend who is a lot more Office365 savvy than I am look at it and he was puzzled too saying the 3rd command didn't show anything.

So not to sure what it all means I'm afraid.
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I am not sure if the order matters as well, but if you are not using the other address book policies I would delete them. No reason to keep them there, as that could be the cause of the problem.

 

Also, I would want to know if this is isolated to Outlook/Address books or O365 as a whole.

 

So if your users go to Word Online, and go to share a file, are they able to search for users there? If so then 100% this is an address book/autodiscover type issue that needs to be addressed. If you have the same problems searching for users in other applications then you have something bigger going on.

 

Adam

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Good news is you've identified where the problem lies, bad news is it appears to be a complex setup (not unusual though). There definitely seems to be a reason why you have this setup, so unwrapping them would be the first step.

 

Having no Address Book policy assigned to a user would mean he/she can view the complete address book in entire org. In case that's what you're looking for you can run:

Set-Mailbox user -AddressBookPolicy:$Null

 

More info: https://docs.microsoft.com/en-us/exchange/address-books/address-book-policies/assign-an-address-book...

 

HABs simply helps search for users in the org by org hierarchy, thus providing an efficient way to find a user. More info: https://docs.microsoft.com/en-us/exchange/address-books/hierarchical-address-books/hierarchical-addr...