DNS – Remove WPAD Filtering

When you want to deploy an autodiscover proxy configuration for your clients, you can use WPAD with DNS.
However Windows Server DNS can reply non-existent domain for an wpad domain name request.

DNS WPAD Filtering

WPAD record in DNS

DNS WPAD Filtering

Non Existant domain

This behavior is by default and can be decomposed in two parts:

  • If WPAD configuration is already in place when you install the DNS server, no action is required.
  • When you want to set up a new WPAD configuration after DNS installation, you need to edit the block list on all your DNS servers.

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