Issues accessing external resources including Microsoft applications through the Hong Kong III data centers

Zscaler has detected an issue with its Hong Kong III datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.Latest Update - Thu, 05 Feb 2026 06:50:08 UTCWe are coordinating with the CDN provider . At this time, no issues have been identified within Zscaler infrastructure, and the impact appears isolated to the CDN provider. Impacted customers are advised to open a support case with their CDN provider for the affected domains and reference the observed connectivity failures originating from the HKG3 data center. No ETA is available at this time. Status updates will be shared when available.Update - Thu, 05 Feb 2026 03:35:40 UTCInitial investigation suggests the issue is impacting destinations fronted by a third party CDN provider. We are actively engaging with the provider through available channels to support further investigation and resolution.Update - Thu, 05 Feb 2026 04:25:44 UTCIn parallel with our ongoing investigation, we recommend impacted customers also open a case with the relevant CDN provider for the impacted domains and reference observed connectivity failures from the HKG3 DC. We are actively attempting to engage the third‑party provider through available channels and will provide further updates as more information or mitigations become available.Update - Thu, 05 Feb 2026 05:04:17 UTCWe are actively coordinating with the CDN provider. At this time, there is no issue identified within Zscaler infrastructure, and the impact appears to be isolated to the CDN provider. Impacted customers are advised to open a case with their CDN provider for the affected domains and reference the observed connectivity failures from the HKG3 data center.Update - Thu, 05 Feb 2026 06:50:08 UTCWe are coordinating with the CDN provider (Akamai). At this time, no issues have been identified within Zscaler infrastructure, and the impact appears isolated to the CDN provider. Impacted customers are advised to open a support case with their CDN provider for the affected domains and reference the observed connectivity failures originating from the HKG3 data center. No ETA is available at this time. Status updates will be shared when available.