Hi,
1. Convert the .PAB to PST in Outlook 2010 (Outlook 2013 doesn't have PAB support)
2. Import PST file to office 365 using PST Capture : https://technet.microsoft.com/en-us/library/hh781035(v=exchg.141).aspx
Hi,
As what ManU PhiliP says, there is no "Personal address book" option in Outlook 2013 and Office 365. We need to import the .PAB in Outlook 2010 for the account or convert the .PAB file to .PST file by using Outlook 2010, then import the PST file to Office 365 as a workaround. For detailed steps about how to import your Personal Address Book to Microsoft Outlook 2010, please refer to:
https://support.microsoft.com/en-us/kb/913496
Regards,