Some of our customers were having issues deploying GoTo Resolve within a Zscaler environment.
One of our customers shared this outline as a guide and were able to get Resolve working properly with Zscaler enabled.
This process is done in 2 stages:
1 - The stage on the Firewall Control and Filtering Rule is tied to the first step in the second stage of accessing Administration, selecting URL Categories and then adding a URL Category.
2 - Add all the Required Domains and Ports listed on the Resolve Allowlist article and then per guidance from Zscaler vendor, included the 5 additional URLs in the Add URL Category.
Policy > Firewall Control > Add Firewall Filtering Rule:
Sign in, and go to Administration > URL Categories > Add URL Category:
Give it a rule order and name > change URL Category to your newly created category > go to Action: Do Not Inspect and Bypass Other Policies.
Save that, activate again, and update the policy on your end clients (or wait an hour or so).
Please post a reply if you have tried it and if this information was helpful.