User-id mapping domain name issue

R.Perez481389 — Fri, 14 Aug 2026 01:52:50 GMT

Hi everyone,

I recently set up GP user-id mapping in our network. It's showing domain.local\username in the logs. I was also told to set up User-ID mapping using the windows agent as well since our users would need to disconnect from GP occasionally. The logs that we get from the windows agent is domain\username.

Issue now is that when we set a policy, if the firewall sees that it came from domain\username it gets denied, I think it's because our group mapping uses domain.local. I checked the Group Mapping settings and saw that we have domain.local in the user domain setting. Will changing this to just the domain fix this? Will it cause downtime when this is applied? I assume once this is done, we'll only see domain\username in our logs?

Thank you

Re: User-id mapping domain name issue

kiwi — Fri, 14 Aug 2026 07:56:30 GMT

Hi @R.Perez481389 ,

The User Domain field tells the firewall how to format the user string when querying AD groups. Changing this to the NetBIOS name ensures that traffic identified as domain\username matches your group-based Security Policies.

When you commit and refresh, the firewall re-fetches the group details from Active Directory. This takes a few seconds. To avoid any brief policy matching blips while the group table repopulates, it is best practice to run this during a low-traffic time or minor maintenance window.

Best,

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User-id mapping domain name issue

Re: User-id mapping domain name issue