Zscaler will be expanding its global data center footprint and performing planned maintenance at our Sao Paulo IV (SAO4) Data Center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and/or any upstream ACL(s) to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscalertwo.net/cenr

https://config.zscaler.com/zscloud.net/cenr

Maintenance Window 

Start time is November 5, 1:00 pm PDT (November 5, 21:00 UTC) 

End time is November 5,  6:00 pm PDT (November 6, 2:00 UTC)

Update - Thu, 06 Nov 2025 01:57:03 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.