Are CALs needed when running 3rd party software on Windows Server?

Question

Are user/device CALs required to run 3rd party proprietary applications, such as VOIP or CRM servers that open a TCP Port for clients to connect?

Or do I only need user/device CALs if clients access actual Windows Server Features such as DHCP/DNS/AD?

dave patrick · Answer

Use of ANY service from a Windows Server&nbsp;requires CALs
Client Access Licenses (CAL) &amp; Management Licenses | Microsoft Volume Licensing
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david945 · Answer

Dave Patrick&nbsp;Even if that service is a 3rd party application?

dave patrick · Answer

Yes, absolutely. The Cals are for windows server access, not the 3rd party product itself.
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dave patrick · Answer

Just checking if there's any progress or updates?
--please don't forget to upvote and Accept as answer if the reply is helpful--
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Are CALs needed when running 3rd party software on Windows Server?

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