Notion outage on September 17, 2026: Notion Calendar sign-in redirects on web
Notion reported an incident affecting Notion for 20 hours 35 minutes on 17 September 2026, from 15:25 to 12:00 UTC.
Resolved
Official incident reported by Notion
- Started
- 15:25
- 17 Sep 2026 UTC
- Resolved
- 12:00
- 18 Sep 2026 UTC
- Duration
- 20h 35m
- 20 hours 35 minutes
- Impact
- Minor
- as rated by Notion
- Updates
- 2
- posted by Notion
Timeline
All times UTC.
Official incident from Notion
Notion Calendar sign-in redirects on web
-
Official
Investigating
We’re investigating an issue where users signing in to Notion Calendar on the web are redirected to Notion.
-
Official
Resolved
Our team identified the issue and deployed the fix. We are back up and running.
"Official" rows are quoted from Notion's public status page, www.notion-status.com. Very long posts are shortened.
What our checkpoints saw
HostTracker's checkpoints, which test www.notion.so from several locations, recorded no outage of 5 minutes or longer during this incident. A provider can report a problem that affects only some features, regions or accounts, which a check of the main address does not see. The live Notion status shows what our checks see right now.
Does your product depend on Notion?
An outage like this one reaches your users through your product, and most teams hear about it from a customer rather than from a dashboard. HostTracker watches any endpoint you name - your own site, an API you call, a vendor you resell - from 300+ locations, confirms a failure from several of them before it says anything, and then tells you by email, SMS, voice call or your chat tool.
You get the same record you are reading here for your own services: every outage timestamped, with the checks that observed it.
Independent measurement by HostTracker. Not affiliated with Notion. Official updates are quoted from Notion's public status page and remain Notion's own words.