https://outlook.office.com/calendar/0/deeplink/compose - fails to load and redirect

[googlejw]

As per the Subject, https://outlook.office.com/calendar/0/deeplink/compose no longer loads/redirects and throws two console errors:

Of particular note:

caught (in promise) TypeError: Cannot read properties of undefined (reading 'options')
at compose:2:282636
at compose:2:283778
at compose:2:283782
at compose:2:283822

Additionally:

The resource <URL> was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it has an appropriate `as` value and it is preloaded intentionally.

 
The page is stuck in a "loading" state where the mail icon animation repeats infinitely. Passing parameters that worked prior (for actual deep links) does not fix the issue.

Strangely https://outlook.live.com/calendar/0/deeplink/compose  is still working.

[#2]

Confirming that I have this issue as well and see the same console errors.
Discussion on github: https://github.com/InteractionDesignFoundation/add-event-to-calendar-docs/discussions/47#discussion-...

[#3]

I can confirm I'm having the same issue.

Edit: Thank you @snapper88 for referring to the discussion on github! Following that I could get it to work replacing the word deeplink with "action" in the url.

Don't know if this is meant to stay this way or why it was changed in the first place. I couldn't find any statement by Microsoft on this.

[#4]

Thanks @snapper88 for adding the Github link. I can confirm that changing the url structure as follows fixes the issue for me:

Before: https://outlook.office.com/calendar/0/deeplink/compose?path=%252Fcalendar%252Faction%252Fcompose&rru...

After: https://outlook.office.com/calendar/action/compose?rru=addevent&startdt=2023-05-08T03:30:00.000Z&end...

[#5]

@googlejw, thanks for confirming.
Would be great to get some kind of official feedback to, so we can be sure this is the way to go in the future.

[#6]

Observation: "action" scheme is only working on desktop. For the mobile view (not the app), it breaks with a black screen and a lot of JavaScript errors.