Category: Unified global address list

Office 365 Tenant to Tenant Migrations

13th June, 2019

Given the growth of Microsoft Office 365, tenant-to-tenant migrations were inevitable and have become more and more frequent.

Tenant-to-tenant migrations have essentially become the new Exchange and AD migrations we all know and love from the last 15 years.

If an Office 365 tenant-to-tenant migration is on your horizon then you are going to have to rely on good planning, 3rd party tools, manual tools and IT Consulting Services from trusted professionals, and that’s where Nero Blanco comes in.

Design for an enterprise scale Exchange 2013 OAB

17th April, 2015

Today we will be discussing how to design your Exchange 2013 Offline Address Book (OAB) for an enterprise scale client.  By enterprise scale client we mean a client with thousands of mailboxes spread over multiple Active Directory sites. See our previous post “Exchange Global Address List and the Outlook Offline Address Book” to clear up any […]

Exchange Global Address List and the Outlook Offline Address Book

2nd April, 2015

Introduction   This document seeks to address and clarify the small misunderstanding surrounding the GAL (Global Address List) and the OAB (Offline Address Book). Quite often all Administrators, even Exchange Administrators simply refer to the users they see in the Address section of Outlook casually as the GAL for ease of reference, but really more […]

OABGen encountered file error ffffffff

20th March, 2015

The problem started with users reporting that their Offline Address Book (OAB) was missing some recent new starters, actually they said Global Address List (GAL) but that misconception is another story for another day.  Upon investigation it seemed that the issue was a global issue.  So where to start…  I first thought right let’s think through […]

Global Address List Not Showing in Outlook

6th June, 2014

We’ve had reports from users who are using Outlook QuickSteps and find that when they look for a contact within the QuickStep they are not shown the Global Address Book. Instead what they see is the Personal Address Book. The reason for this is the registry key HKLM\Software\Clients\Mail\(Default) not being set to Microsoft Outlook.  In […]