Outlook ActiveSync Error 0x8004011c

If you have been working with Microsoft Outlook for any time, then chances are you are aware that in versions 2013 and newer users are able to connect to servers using the ActiveSync protocol. Unlike POP, ActiveSync allows the user to synchronize almost the entire mailbox with the server. This is a huge plus for end users as they can now have the same mailbox synchronized across multiple devices. Now that we have been using ActiveSync connections in Outlook 2013/2016 we have found an anomaly regarding setup on domain joined computers. Essentially, when trying to setup an ActiveSync Outlook profile on a domain joined computer, we were getting a MAPI error code 0x8004011c (pictured left). Once we had the code in hand, we headed over to Google to get some answers. What we found here, was that domain joined computers needed an extra flag set in the registry to enable a working ActiveSync connection. Below is the command that needs to be run as administrator in order to add the required registry key.

Once the registry key is added, you should now be able to successfully connect to you ActiveSync compatible server.

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