While Configuring an Active Directory in the agent, you may encounter the following error on the WSTEP tab of the on-premises PKIaaS Virtual Machine. 

ErrorDialURL
LDAP Result Code 200 "Network Error": dial tcp: lookup <DOMAIN-NAME>: i/o timeout

See below for a list of possible causes and the corresponding solutions.

Firewall rules blocking the access

Firewall rules may block connections from the IP address of the PKIaaS Virtual Machine to the DNS server on port 53.

See Network requirements for the PKIaaS Virtual Machine for all the port access requirements.

Issue resolution: Edit the firewall rules to allow access.

Invalid DNS settings in the Agent configuration

The DNS server settings were not properly defined when Configuring an Active Directory in the agent.

Issue resolution: Edit the agent configuration to update the DNS settings.