Body
Problem
Update/change made within Microsoft Outlook has not taken effect.
Answer
In Outlook, changes to a user's email address or other contact information typically take effect within 24 hours. This delay is due to the time it takes for these changes to propagate through the Global Address List (GAL) and the Offline Address Book (OAB) which Outlook uses for address lookups.
Detailed Breakdown
Global Address List (GAL):
The GAL, which contains all user information for an organization, is updated relatively frequently, but Outlook clients typically only download updates every 24 hours
Offline Address Book (OAB):
The OAB, a cached version of the GAL that Outlook uses for offline access, is updated on a similar schedule, often every 24 hours.
Active Directory Synchronization:
If your organization uses Active Directory, changes made there may also need to sync with Exchange Online, which can add to the delay.
Microsoft 365:
Changes to email addresses in Microsoft 365 may also take up to 24 hours to be reflected across all services
Additional Information
For additional assistance, please contact IT Support Services at 531-622-2900 or ITSupportServices@mccneb.edu.