Get-GlobalAddressList | Update-GlobalAddressList 2. Client-Side: Automation via PowerShell
While Microsoft Outlook does not have a native, single-line "command line switch" (like /download-oab ) to trigger a download of the Offline Address Book (OAB), you can achieve this through a combination of , Exchange Management Shell (EMS) commands, or manual intervention within the GUI. outlook download address book command line
Note: This script requires Outlook to be running or at least configured with a profile on the machine. 3. Troubleshooting via Command Line Get-GlobalAddressList | Update-GlobalAddressList 2
Before a client can download an updated address book, the server must first generate a new version. If you are an administrator with access to the , use these commands to force an update on the server side: Exchange Management Shell (EMS) commands
You can force a full redownload by deleting the existing local files. Close Outlook and run: del /q /s "%LOCALAPPDATA%\Microsoft\Outlook\Offline Address Books\*" 4. Native GUI Method (The Most Reliable Way)
Update-OfflineAddressBook -Identity "Default Offline Address Book"