Owa global address list not updating
All of this is goodness and it will lead to a cleaner situation in the future.
However, some clean-up is necessary because many Office 365 Groups have been created by Teams since its preview started in November 2016.
Any search function, such as looking up an address when composing a message or subscribing to a calendar, uses the GAL to search against.
After a change is made, it may take up to 24-48 hours for those updates to be reflected in the GAL.
The potential use of a group as a distribution list is just another factor to consider in your decision making process.
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Users then have the choice of collaborating through Outlook-based conversations or Teams.
It’s possible that a team member might then make a mistake and post important information in the wrong place.
The Global Address List (GAL) is the address look up feature in Office 365.
Sometimes a group mailbox does not have a Conversation History folder.
This doesn’t matter for our check because if a group mailbox does not have a Conversation History folder, it cannot have a Team Chat sub-folder, which is good evidence that the group has never been team-enabled and we can ignore these groups.
The existence of some compliance records in the Team Chat folder shows that the group is team-enabled, and some activity has happened inside a channel.
That should be enough to highlight the group as a candidate for hiding.