Windows Server DNS Licensing

Hello, I am planning on using windows server 2022 or 2025 as a DNS Server only (only DNS role activated. Nothing else. Do I need to buy CALs for the 70 users of my LAN?

I can't find anything SPECIFIC on the Licensing documentation

I asked on copilot and got the answer:

If you are using Windows Server 2022 solely as a DNS server and no other roles (like Active Directory, file sharing, or remote desktop services), you do not need Client Access Licenses (CALs) for the users or devices querying the DNS server.

Why CALs Are Not Required for DNS-Only Scenarios:

• DNS is a network service: DNS queries are considered part of the network infrastructure, and Microsoft does not require CALs for clients or devices that only interact with the server for DNS resolution.
• CALs are required for other roles: CALs are typically needed for roles like Active Directory, file sharing, printing, or Remote Desktop Services, where users or devices directly access server resources.

When CALs Might Be Required:

• If you enable additional roles or features (e.g., Active Directory, DHCP, file sharing, or Remote Desktop Services), CALs would be required for users or devices accessing those services.
• If the DNS server is part of an Active Directory domain, CALs are required for users or devices accessing the domain.

Best Practices:

1. Use the Server Only for DNS: If you want to avoid CAL requirements, ensure the server is only used for DNS and no other roles.
2. Monitor Role Usage: Regularly check the server to ensure no additional roles or features are enabled that might trigger CAL requirements.
3. Document Licensing: Keep records of your licensing setup to ensure compliance with Microsoft's terms.

In summary, for a DNS-only server, you do not need CALs for users or devices querying the DNS service. However, if you expand the server's functionality, CALs may become necessary. Always review Microsoft's licensing terms or consult with a licensing expert to ensure compliance.