AZ Asia-Pacific - Zscaler Help Centre
All Categories Zscaler Internet Access Disable Loopback Restriction

Disable Loopback Restriction

This setting inside the app profile must be enabled if client encountered an issue with outlook and intune. Some servers are using loopback addresses, when ZIA is on the endpoint might not be able to access those servers that are using loopback address.

https://help.zscaler.com/client-connector/configuring-zscaler-client-connector-profiles