Capetown IV Datacenter Scheduled Maintenance - IPv6 Enablement - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net
Incident Lifecycle
Incident Timeline
Investigating
Zscaler will be enabling IPv6 at our Capetown IV (CPT4) Data Center. During the maintenance window the services through CPT4 Data Center will be restarted in phases to minimize the service impact.Other Zscaler sites and Zscaler Services will continue to operate normally.Maintenance Window:Start time is May 19, 9:00 am PDT (May 19, 16:00 UTC)End time is May 19, 4:00 pm PDT (May 19, 23:00 UTC)
May 15, 2026 at 6:10 PM UTC
Was your business affected by this Zscaler outage?
Set up instant alerts for Zscaler, be the first to know about outages via email, Slack, Teams, or Discord.