Sydney III Datacenter Issue

Zscaler is currently investigating reports of an issue with its Sydney III datacenter. 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 updates will be posted there as they become available.Latest Update - Fri, 23 Jan 2026 05:28:41 UTCAfter analyzing bidirectional MTRs from affected paths, we identified a consistent packet loss closer to customers’ networks, common across all impacted routes. Based on these findings, we concluded that the issue is external to Zscaler, and we recommend customers open tickets with their service providers to address the path issue between their network and Zscaler. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP).Update - Fri, 23 Jan 2026 04:07:19 UTCWe are still investigating the issue and we will share further updates as available.Update - Fri, 23 Jan 2026 05:28:41 UTCAfter analyzing bidirectional MTRs from affected paths, we identified a consistent packet loss closer to customers’ networks, common across all impacted routes. Based on these findings, we concluded that the issue is external to Zscaler, and we recommend customers open tickets with their service providers to address the path issue between their network and Zscaler. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP).