Notion outage on October 20, 2026: Security update: Preventative certificate security measures
Notion has reported an incident affecting Notion since 19:00 UTC on 20 October 2026 (2 days 2 hours so far).
Open
Official incident reported by Notion
- Started
- 19:00
- 20 Oct 2026 UTC
- Status
- Open
- not resolved yet
- Duration
- 2d 2h
- 2 days 2 hours so far
- Impact
- -
- as rated by Notion
- Updates
- 1
- posted by Notion
Timeline
All times UTC.
Official incident from Notion
Security update: Preventative certificate security measures
-
Official
Investigating
We are aware of a security issue involving eMudhra, a third-party certificate authority used to verify secure internet connections. Our security and engineering teams are assessing potential exposure and proactively updating affected software and certificate bundles across our services and applications. At this time, we have not identified evidence that Notion has been compromised in connection with this issue. This work is a preventative security measure, rather than a response to a service outage. We’re taking precautionary steps to update affected certificate-validation components and block trust in the affected certificates where needed.
"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.