Default global address list is not updating Chatsexo xxx
This means that in the worst possible scenario, an update to the Address Book won’t become available to the user until 48 hours after the change.
This situation however is extremely rare since the default maintenance time on Exchange is at AM and updates and downloads are usually performed during working hours.
I ran the commands you recommended and tried it about 4 hours after that. As another way to troubleshoot the problem, I created a new profile for Outlook.
Use the Update-Global Address List cmdlet to update the recipients included in a global address list (GAL).
Although all parameters for this cmdlet are listed in this topic, you may not have access to some parameters if they're not included in the permissions assigned to you.
To see what permissions you need, see the "Address lists" entry in the Email address and address book permissions topic.
A GAL is a directory that contains entries for every group, user, and contact within an organization's implementation of Microsoft Exchange.
For additional management tasks related to address lists, see Address list procedures.
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We have another server in the wings waiting to be deployed, but we need to address the problem in the meantime. If it does not, then it is the generation or distribution process that is failing. OWA reflects the information correctly, but Outlook does not. I have tried deleting the OAB files, but when I download the address book, it still has the outdated version.