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Q. I work for a very large company and I don't have enough space on my C drive for the Offline Address Book that Outlook stores. Can I move it?
John Savill
April 16, 2010
1 Min Read
A. Wow, that's a big company . By default, the Offline Address Book (OAB) resides in %USERPROFILE%AppDataLocalMicrosoftOutlookOffline Address Books. You'll see six different OAB files that contain the address book's content.
If you need to change this location, you can update a registry value, as outlined here.
Close Outlook.
Start the registry editor (regedit.exe).
Move to HKEY_CURRENT_USERSoftwareMicrosoftWindows NTCurrentVersionWindows Messaging SubsystemProfiles13dbb0c8aa05101a9bb000aa002fc45a.
From the Edit menu, select New, DWORD value.
Enter a name of 001e660e and press Enter.
Double-click the new value and set it to the new path for the OAB, then click OK.
Close the registry editor and restart Outlook.
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