What does NTSTATUS 0xC0220042 (STATUS_FWP_INVALID_DNS_NAME) mean?

 
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STATUS_FWP_CONNECTIONS_DISABLED STATUS_FWP_STILL_ON

STATUS_FWP_INVALID_DNS_NAME

A DNS name used by the policy cannot be parsed or accepted

Some IPsec and WFP policy objects can carry DNS names for endpoints or conditions. This status reports invalid name syntax or unsupported content before any network lookup is attempted.

Capture the DNS name exactly as passed into the IPsec or AuthIP policy. Validate syntax, normalization, and the rule that supplied it before investigating name resolution or network reachability.

What to inspect

  • Validate the configured DNS name string.
  • Check whether wildcards or internationalized names are supported in that field.
  • Do not confuse invalid syntax with DNS resolution failure.

References for STATUS_FWP_INVALID_DNS_NAME


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