Zoom outage on September 16, 2026: Service Degradation Affecting Zoom Phone Outbound Calls in China Region
Zoom reported an incident affecting Zoom for 36 minutes on 16 September 2026, from 04:00 to 04:35 UTC.
Resolved
Official incident reported by Zoom
- Started
- 04:00
- 16 Sep 2026 UTC
- Resolved
- 04:35
- 16 Sep 2026 UTC
- Duration
- 36m
- 36 minutes
- Impact
- Minor
- as rated by Zoom
- Updates
- 4
- posted by Zoom
Timeline
All times UTC.
Official incident from Zoom
Service Degradation Affecting Zoom Phone Outbound Calls in China Region
-
Official
Investigating
We are currently investigating a service degradation affecting Zoom Phone outbound calls for users with phone numbers that have the +8621 prefix in China. Inbound calls not impacted. Our team is actively working to identify the impact and root cause. We will provide an update as soon as more information becomes available. We appreciate your patience as we work to resolve this issue.
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Official
Identified
We have successfully identified the root cause affecting Zoom Phone outbound calls for users with phone numbers that have the +8621 prefix in China. Inbound calls not impacted. Our team is actively working on a resolution, and we will keep you informed with timely updates as progress is made. Thank you for your patience.
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Official
Monitoring
The issue affecting Zoom Phone outbound calls has been successfully resolved. Our team will continue to monitor the situation closely and keep you informed of any further developments.
-
Official
Resolved
This incident has been resolved and the affected services have been restored.
"Official" rows are quoted from Zoom's public status page, www.zoomstatus.com. Very long posts are shortened.
What our checkpoints saw
HostTracker's checkpoints, which test zoom.us 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 Zoom status shows what our checks see right now.
Does your product depend on Zoom?
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 Zoom. Official updates are quoted from Zoom's public status page and remain Zoom's own words.