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Outage in Zscaler

Degraded Performance for Some Users Connecting Through Dallas, Miami, and Atlanta

Resolved Minor
November 04, 2026 - Started 9 days ago - Lasted about 2 hours

Incident Report

Summary AI Generated

Zscaler experienced degraded performance affecting users connecting through its Dallas, Miami, and Atlanta data centers, impacting both Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA), with ZPA users reporting slower access to private applications. The issue was caused by packet loss on network paths serving these regions, with a suspected upstream carrier or routing problem; packet loss briefly decreased in Dallas and Miami before increasing again. Affected customers were advised to fail over to alternate data centers, with ZIA users able to do so independently and ZPA users directed to contact Zscaler Support for assistance.

 Zscaler is investigating degraded performance affecting some users connecting through Dallas, Miami, or Atlanta via Zscaler Internet Access (ZIA) or Zscaler Private Access (ZPA). Some ZPA users have reported slower access to private applications.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 - Wed, 04 Nov 2026 23:50:18 UTCZscaler continues to investigate degraded performance affecting users of Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA) who connect through Dallas, Miami, or Atlanta. Packet loss on network paths serving Dallas and Miami briefly decreased before increasing again. We continue to monitor the affected paths and investigate whether an upstream carrier or routing issue is contributing to the degradation. Guidance for affected customers ZIA: If your deployment has an alternate Zscaler data center configured, you can fail over to that data center. ZPA: Contact Zscaler Support for assistance with failing over to your secondary data center. We will share further updates as the investigation progresses.Update - Wed, 04 Nov 2026 23:24:10 UTCZscaler has observed packet loss on network paths serving Dallas, Miami, and Atlanta. We are investigating whether an upstream carrier or routing issue is contributing to the degraded performance and continue to assess the impact on Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA). If you are experiencing degraded performance with ZIA, fail over to an alternate Zscaler data center if one is configured. If you are experiencing degraded performance with ZPA, contact Zscaler Support for assistance with failing over to your secondary data center.Update - Wed, 04 Nov 2026 23:50:18 UTCZscaler continues to investigate degraded performance affecting users of Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA) who connect through Dallas, Miami, or Atlanta. Packet loss on network paths serving Dallas and Miami briefly decreased before increasing again. We continue to monitor the affected paths and investigate whether an upstream carrier or routing issue is contributing to the degradation. Guidance for affected customers ZIA: If your deployment has an alternate Zscaler data center configured, you can fail over to that data center. ZPA: Contact Zscaler Support for assistance with failing over to your secondary data center. We will share further updates as the investigation progresses.

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