Datadog outage on September 21, 2026: Delayed Monitors Notifications
Datadog reported an incident affecting Datadog for 46 minutes on 21 September 2026, from 09:44 to 10:30 UTC.
Resolved
Official incident reported by Datadog
- Started
- 09:44
- 21 Sep 2026 UTC
- Resolved
- 10:30
- 21 Sep 2026 UTC
- Duration
- 46m
- 46 minutes
- Impact
- Minor
- as rated by Datadog
- Updates
- 4
- posted by Datadog
Timeline
All times UTC.
Official incident from Datadog
Delayed Monitors Notifications
-
Official
Investigating
We are investigating delayed evaluations for metric, service check, composite, and SLO monitors in US1 which began at Sep 21, 2026, 9:18 AM UTC.
-
Official
Identified
We identified the issue and is working on a fix.
-
Official
Monitoring
We are monitoring the issue.
-
Official
Resolved
The issue is now resolved.
"Official" rows are quoted from Datadog's public status page, status.datadoghq.com. Very long posts are shortened.
What our checkpoints saw
HostTracker's checkpoints, which test app.datadoghq.com 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 Datadog status shows what our checks see right now.
Does your product depend on Datadog?
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 Datadog. Official updates are quoted from Datadog's public status page and remain Datadog's own words.