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I want bring an offline experience to the Outlook Web add-in that I am trying to build targeting the Outlook windows client. My idea is to use modern offline methods like service worker. This applies for Word Add-in as well. It would be nice to have something working in offline mode.

I found that web client that Outlook uses to render the add-in , does not support Service Worker. I am not in favor of using app cache to get offline experience , since it is not a web standard anymore.

Is the service worker support for Office Web add-in being planned by the Office add-in team? Or is there any other approach that is being suggested?

NewtonCode
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Offline running is not supported for Office/Outlook Add-ins. But it's a good idea. Please vote up this request at Office Developer Voice.

Rick Kirkham
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  • In an answer to similar question , it is mentioned that html application cache works in Office 2013 . I have tried that in Office 2016 and could not replicate. Does Office 2016 support application cache? – NewtonCode Dec 03 '18 at 04:42
  • https://stackoverflow.com/questions/37240650/do-office-add-ins-always-require-internet-access-to-work – NewtonCode Dec 03 '18 at 04:42