Office 365 Administration Inside Out

Hey! It’s finally here! After months of hard work (almost a year from when we started until a copy at my doorstep), we’ve finally made it to the finish line!  Also, pay no mind to my poor cuticles! You can read the press release here: https://blogs.msdn.microsoft.com/microsoft_press/2017/11/27/new-book-microsoft-office-365-administration-inside-out-includes-current-book-service-2nd-edition Or jump straight to Amazon and order it: http://aka.ms/o365adminio…

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Migrating Hybrid Public Folders to Office 365

So, tonight I started the last phase of one of my longest-running projects since joining Microsoft–an Exchange Online migration for a school district that I began nearly a year and a half ago.  40,000 mailboxes down and 13,000 public folders remaining. One of the things that we recommend for Hybrid Public Folders is that you…

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Disable Office 365 Groups Creation

Update: There are new cmdlets available for this task.  This blog is for historical reference only.  A new, updated process is available here (https://blogs.technet.microsoft.com/undocumentedfeatures/2017/04/29/disable-office-365-groups-creation-redux/). Office 365 Groups are a (somewhat) new feature that act both like a distribution list and a public folder.  The underlying technology is a SharePoint site mailbox.  The problem with a…

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Office 365 PAC File

When we talk about Office 365 services with our customers, a lot of the discussion revolves around the networking components.  While we generally have a “good idea” of networking, we’re not experts in your technology and will frequently tell you to go talk to your vendors.  We have some guidance on how to configure your…

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Extending Active Directory Users and Computers with Custom Attributes

If you've ever wanted to add columns for unlisted attributes to Active Directory Users and Computers, you've been out of luck without editing the displaySpecifiers manually. Until I had enough of it. How does it work?  I'm so glad you asked.  So, if you're not familiar with the functionality that I'm talking about, open up…

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Disable Office 365 Groups Creation: Redux

Several months ago, I wrote a blog on Disabling Office 365 Groups.  It seems as though we couldn’t leave well enough alone.  Such is a price of progress. I got a new laptop a few weeks ago, and then found myself in the position of helping out a few colleagues this week.  One of the tasks…

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Subscribe to the Office 365 URLs and IP Addresses RSS Feed in Outlook

From time to time, we update the URLs and IP addresses that our services use.  This happens as a normal course of business (deploying new services, adding new capacity in datacenters or regions).  If your organization is trying to filter network traffic, you need to make sure you are allowing your users to these services. …

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Use AADConnect to Populate Office 365 Usage Location

So, a million years and tens of thousands of lines of code ago, I wrote a script for a customer to populate the Office 365 UsageLocation property (Set-MsolUser -UsageLocation) with the ISO country codes from Active Directory.  In Office 365, UsageLocation is used to determine what features are available to your users. If you have the…

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Troubleshooting Mailbox Migration Error “You can’t use the domain because it’s not an accepted domain for your organization.”

While migrating users via MRS between organizations (especially to Exchange Online), a pretty common error that I run across is: You can’t use the domain because it’s not an accepted domain for your organization. This error is generated because the MailUser object of the user you’re attempting to migrate has a proxy address attached to…

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Subscribe to the Office 365 Service Health Dashboard RSS Feed in Outlook

*UPDATE* We have deprecated the Service Health Dashboard RSS Feed. For service health updates, you can go to https://portal.office.com/adminportal/home#/servicestatus. Periodically, services in Office 365 may become affected by a number of things (network availability, regional network disruptions, upgrades to the service environment, etc). You can stay on top of these updates by subscribing to the…

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Updates to Office 365 Proxy PAC Generator

I wrote the original Proxy PAC tool for a customer almost a year ago, and since have added a lot of new functionality.  Rather than updating my previous blog posts about it, I thought I would start a fresh thread.  If you want some background on how Proxy PAC files work and how to distribute…

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