Exchange 2016 & Office Online Server

pptxiconUpdate (May 9th): Office Online Server is now also available through MSDN here.

Update (May 4th): Office Online Server became available today. OOS is available on VLSC, language packs are on MSDN as well (perhaps a clue OOS will be available later on MSDN as well). Document modification option comes with additional licensing requirements, consult the release article for more information.

On April 26th, I gave a session on Exchange 2016 and Office Online Server – or OOS. Creating the session contents proved to hold some challenges. After agreeing on the session around the January timeframe, when OOS was still in Technical Preview, OOS got pulled a few weeks ago without notice. It was expected it would become Generally Available (GA) shortly after the release of SharePoint 2016, but that didn’t happen. To make matters more interesting, OOS was moved to Volume Licensing Service Center only, where its predecessor was freely available on the Microsoft download center. Currently, the status of OOS is that it is GA, and available on the VLSC site. The session and demo were based on the Technical Preview.

Back to the event, which was hosted by the always friendly and hospitable people from the Belgian E-Communications Community. At the office of Microsoft in Zaventem, Belgium, sessions were presented by 8 Microsoft MVP’s, Microsoft and sponsors, divided in 2 tracks: one Exchange-oriented track, and one track with Skype for Business related topics. Around a total of 60 people turned up in person for the event, and sessions were also  streamed live through Skype Meeting Broadcast. Excellent usage of available technology.

(picture by Michael van Horenbeeck)

After the opening keynote, Tony Redmond kicked off talking about Office 365 Groups, followed by fellow countryman Dave Stork talking about using Tools to deploy and manage Exchange. After the break, it was time for my session on Exchange 2016 and Office Online Server. Unfortunately, in the category 1st world problems, lack of an HDMI connector – required for presenting as well as streaming – on my laptop prevented me from doing the demo, and the remaining time was filled by a improvised Ask the Experts session on Exchange and Office 365, in which I was joined by the other Dutch MVP’s present. After that, Michael van Horenbeeck talked in his session about Advanced Identity & Authentication scenarios for Office 365. Jaap Wesselius closed the Exchange track with a session on the Do’s and Don’ts when using Exchange 2010 for Hybrid deployments.

The links above lead to the session recordings; a complete session overview including links to the recordings for the Skype for Business related sessions can be found here. My slidedeck – with caps of the demo – can be downloaded here. A page with links to all the slidedecks and recordings can be found here.

Delegated Sent and Deleted Items behavior

Many people using Outlook access multiple mailboxes, either because the mailbox is shared or they are a delegate (e.g. they have send-as permissions). What many users find confusing is that by default, Outlook will put the copies of all sent messages in the Sent Items folder of the default account. For example, when Peter sends a message as John, users expect Outlook to put the message in the Sent Items of John. Also, when Peter deletes a message from John’s mailbox, it will end up in Peter’s Deleted Items folder.


Luckily, this behavior can be altered for Outlook 2003, Outlook 2007 and Outlook 2010 using two registry settings. In order for these setting to work, Outlook needs to have a certain hotfix; which hotfix depends on the Outlook version used. Note that a later service pack or hotfix may already contain this setting:

To enable the different Sent Items behavior, you need to create or edit the a value named DelegateSentItemsStyle, type REG_DWORD and set it to 1 (default is 0 or not present). The location of the registry value is HKCU\Software\Microsoft\Office\<version>\Outlook\Preferences, where <version> depends on the Outlook version used; use 11 for Outlook 2003, 12 for Outlook 2007 or 14 for Outlook 2010.

To alter the Deleted Items behavior, create or edit a value named DelegateWasteBasketStyle, type REG_DWORD and set it to 4 (default is 8 or not present). The location of the registry value is HKCU\Software\Microsoft\Office\<version>\Outlook\Options\General; for version number use one of the values mentioned before.

After implementing these registry values, either manually or by publishing them in group policies, sent items and deleted items will be stored with the mailbox:


Note: these registry keys only work when using Outlook in Cached Mode; more information in kb2703723.