After upgrade to LAS, getting unknown license servers called "unknown names" by the Citrix Admin which does not belong in the environment.

The issue was caused by a DNS misconfiguration on the License Server host.

In the affected environment, DNS was returning multiple hostnames for the same IP address (127.0.0.1).
Because the License Server relies on hostname resolution when communicating with Citrix Cloud, the incorrect DNS responses were reflected in Citrix Cloud, resulting in unexpected license server names being displayed.

This behavior was confirmed by running hostname and DNS resolution commands on the License Server, which returned incorrect or multiple hostnames for the local IP address

On the License Server, run the following commands and review the output:

1. hostname
2. nslookup 127.0.0.1
3. ping %COMPUTERNAME%

If these commands return:

• Multiple hostnames for the same IP
• Hostnames that do not belong to the environment then DNS resolution is incorrect and may impact how the License Server is identified in Citrix Cloud.

After upgrading or registering the Citrix License Server (LAS) with Citrix Cloud, administrators may notice unexpected or incorrect license server hostnames appearing in Citrix Cloud.

Examples include:

• Hostnames that do not belong to the environment (for example, zoom.us)
• Multiple or duplicate entries resolving to 127.0.0.1
• License servers appearing under unexpected names despite no such configuration in files or registry

This behavior can cause confusion and concerns about environment integrity.