Clients: Outlook on the web (formerly Outlook Web App) in Exchange 2016

Outlook Web App is now renamed as Outlook on the web that continues to allow users access their Exchange mailbox, almost from any web browser.

Kindly Note:

Supported Web browsers for Outlook on the web in Exchange 2016 are Microsoft Edge, Internet Explorer 11, and the current versions of Google Chrome, Mozilla Firefox, and Apple Safari.

The previous Outlook Web App user interface has been duly updated and optimized for smart phones, tablets, desktop, and laptop computers. New Exchange 2016 functions include:


  • Platform-specific exposure and experiences for phones, mainly for iOS and Android.

  • Premium Android core experience using Chrome on devices executing Android version 4.2 or later.

  • Email enhancements, consisting of a new single-line view of the Inbox with an effectively optimized reading pane, archiving, emojis, and the capability to undo mailbox tasks like deleting a message or shifting a message.

  • Contact linking the capability for users to append contacts from their LinkedIn accounts.

  • Calendar has an upgraded and updated look and new functional features, consisting of email reminders for Calendar events, capability to propose a novice new time in meeting invitations, enhanced search, and birthday calendars.

  • Search suggestions, recommendations and refiners for an enhanced search experience which helps users with quick search the information they require. Search recommendations try to assume and anticipate what the user’s looking for and returns results, intelligently which might be what the user is looking for. Search refiners are going to help a user more easily search the information they’re looking for by offering contextually-aware filters. Filters might include date ranges, related senders, and so on.

  • New themes Thirteen new updated themes with graphic designs.

  • Options and choices for individual mailboxes have been overhauled.

  • Link preview that empowers users to paste a link into messages, and Outlook on the web automatically creates and generates a rich preview to provide recipients a peek into the contents of the destination. This works well with video links as well.

  • Inline video player saves the user valuable time by keeping them subject to their conversations. An inline preview of a video by default automatically appears after inserting a video URL.

  • Pins and Flags that allow users to keep important emails at the top of their inbox (Pins) and mark rests for follow-up (Flags). Pins have become a folder specific, easy and methodical for anyone who uses folders to organize their email. Quickly search and manage flagged items with inbox filters or the new novice Task module, accessible from the app launcher.

  • Performance enhancements in a number of multiple areas across Outlook on the web, consisting of composing, creating calendar events, loading messages in the reading pane, popouts, startup, search, and switching folders.

  • New Outlook present on the web action pane which allows you to click quickly those actions you use most commonly like New, Delete and Reply all. Some new actions or tasks have been added as well consisting of Archive, Sweep, and Undo.



Offline Outlook on the web


Internet Explorer 11 and Windows Store apps utilizing JavaScript support and help the Application Cache API (or AppCache) as declared and defined in the HTML5 specification, which allows you to generate or create offline web applications. AppCache empowers webpages to cache (or save) resources locally, consisting of script libraries, images, style sheets, and so on. In addition, AppCache permits URLs to be served via cached content using standard Uniform Resource Identifier (URI) notation.


The following given is a list of the browsers which support AppCache:


  1. Internet Explorer 11 or later versions

  3. Microsoft Edge

  5. Google Chrome 44 or later versions

  7. Apple Safari 8 or later (only on OS X/iOS) versions

  9. Mozilla Firefox 39 or later versions




MAPI over HTTP is now acting as a default protocol that Outlook utilizes to communicate with Exchange. MAPI over HTTP enhances the reliability and stability of the Outlook and Exchange connections by shifting the transport layer to the industry-standard HTTP model. This permits a higher level of visibility accessibility of transport errors and improved recoverability. Additional functionality consists of support for an explicit pause-and-resume function that enables supported clients to alter networks or resume from hibernation during maintaining the same server context.

Kindly Note:

MAPI over HTTP isn’t activated and enabled in enterprises where the following conditions are said to be true:


  • You’re installing Exchange 2016 in an enterprise that already has Exchange 2013 servers installed.

  • MAPI over HTTP is not enabled in Exchange 2013.


While MAPI over HTTP is now the default automatically executed communication protocol between Outlook and Exchange, clients which don’t support it is going to fall back to Outlook Anywhere (RPC over HTTP). And RPC (RPC over TCP) is not supported now.


Document collaboration in Exchange 2016


Along with SharePoint Server 2016 Exchange 2016, enables Outlook over the web users to link to and share and exchange documents which are stored in One Drive for Business processes in an on-premises SharePoint server rather than attaching files to messages.

Users present in an on-premises environment may collaborate on files in the similar manner that’s used in Office 365.


When an Exchange 2016 user gets a Excel, Word, or PowerPoint file via an email attachment, and the file is stored in One-drive for Business or on-premises SharePoint, the user have privilege of accessing and editing that file in Outlook on the web alongside the message. To get this done, you’ll require a separate computer system at your on-premises organization that’s running Office Online Server.

Exchange 2016 also launched with the following enhancements relating to document collaboration:


  • Saving files and storing to One-drive for Business.

  • Uploading a file to One-drive for Business purpose.

  • Recently Used lists populated with both local and online files.

Kristin is a content strategist at Techarex Networks. Kristin follows the B2B technology space closely and loves to write on the latest changes in technology, futuretech and fixes for day to day how to issues. Besides writing Kristin also loves music, moves and skating.

Techarex Networks provides the complete range of Hosted Exchange solutions and services, giving access to reliable, secure, messaging and collaborative enterprise-grade solutions having 99.999% uptime with unmatched SLA. Provide enterprise-level sync with Outlook Web App and mobile devices. Anywhere, anytime access using Instant Message and video calling integration.