Working with like minded colleagues now specializing in very large scale complex migrations from Lotus Notes and On-Premise Microsoft Exchange to Office 365.
Information in the GAL is only updated once a day from AD.
AD service managers are responsible for the GAL data, though Exchange service managers have access as well.
In the drop down menu underneath where it says "When opening this address book, show this address list first:", select "Global Address List" or whichever option you would like the new default to be.
Outlook Web Access provides a useful set of tools for your business, including the Global Address Book for storing all of your contact information in one convenient location.
In general, OWA offers realtime updates, while Outlook takes 26 hours.
Outlook can be manually updated via the other solution: That is, you can send email to any user in AD.
” Well, the truth of the matter is that our new joiner Joe is in fact , an update to the Address Book won’t become available to the user until about 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.
Quite often all Administrators, even Exchange Administrators simply refer to the users they see in the Address section of Outlook casually as the GAL for ease of reference, but really more often than not, you are looking at the OAB.
However sometimes in large complex organisations we have a situation where a new joiner joins and their colleagues want to email them immediately, but they don’t appear in Outlook for them so they call the Helpdesk “Why isn’t Joe Bloggs in the GAL??
I spend a good amount of time traveling/working from my phone, an i Phone.