Hi all, The calendar for all the ~1200 of my users at awg.osdr.space is down I saw there was some sort of new release? Here is what me and everyone else is seeing. Please help ASAP [image]

I resolved it. Posting the fix for anyone else hitting this after updating to 2026.8. Root cause: Our site (Communiteq-hosted) {EDIT by OP/RS later - I WAS WRONG; site hosted by Discourse :slight_smile:} updated to Discourse 2026.8.0-latest.1, which bundles Calendar and Events into core. After the update, the Events plugin showed as Enabled at admin/plugins, but the discourse post event enabled site setting was off. This caused a server-side 404 on /discourse-post-event/events.json and the “page doesn’t exist” error on /upcoming-events for all users. Fix: Re-enable discourse post event enabled in site settings. Calendar and all events repopulated immediately. No data loss since events live in topic posts. Flagging for the team: the enabled state of this setting may not be carrying over during the core-bundling migration. Worth checking whether other sites updating to 2026.8 will hit the same thing.

[image] Ryan_Scott: awg.osdr.space [image] Ryan_Scott: Our site (Communiteq-hosted) That does not seem to be hosted by Communiteq? Also, the calendar plugin has been bundled into core since over a year.

Indeed, it seems this site is hosted by discourse.org Thanks for reporting this @Ryan_Scott and sorry for the confusion, we can look into this.

[image] RGJ: Also, the calendar plugin has been bundled into core since over a year. I think the calendar plugin was renamed to “events” recently. That’s why it might seem like a new plugin.

Yeah, I was wrong. Indeed, https://awg.osdr.space/ is hosted by Discourse :slight_smile: The fix was as simple as as toggling the plugin on Admin page I was away from the site for ~12 hours, and in that time, the Calednar plugin update didnt automatically update the site, so had number of messages from users asking where did their calendar go :sweat_smile: @awesomerobot All good now. Thanks @Discourse

Calendar down? The calendar for all my users is down. Pretty big deal

Product Support

awesomerobot (Kris) August 19, 2026, 5:54pm 5

Fortunately not a complicated issue — we’ve identified and applied a fix for this that will prevent it from happening as sites update.

Topic		Replies	Views
Upcoming events page broken after recent update Bug events	3	274	November 7, 2025
Calendar not showing post-level events Bug events	4	319	September 15, 2025
Accessing Events plugin calendar from iCalendar/Google Calendar is broken since recent update Product Support	2	636	February 13, 2022
Discourse calendar no longer shows any events (in some browsers only) Bug events	15	1223	October 10, 2023
Discourse Event (Official) v. Events Plugin (Pavilion) General	3	1989	February 15, 2023

Calendar down? The calendar for all my users is down. Pretty big deal

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