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Buy RDS CAL License

Looking to buy RDS CAL license for your terminal server? You need one for every person or device that connects via Remote Desktop. We sell genuine Microsoft Windows Remote Desktop Services CAL for Server 2025, 2022, 2019, and 2016. User RDS CAL and Device RDS CAL, delivered to your inbox in minutes. We have shipped RDS licenses to about 8,000 businesses at this point. Everything we sell comes through authorized Microsoft channels. If activation fails, we replace or refund within 24 hours.

What is an RDS CAL and Why Do You Need One?

Short version: RDS CAL = license for Remote Desktop connections. You need one per user or device that RDPs into your server. RDS = Remote Desktop Services. Basically a way for multiple people to log into one server and each see their own Windows desktop. Common in offices where everyone runs the same apps off a central machine. Here is where it gets annoying. Your Windows Server CAL only covers basic access like file shares and printers. The second someone opens an RDP session and sees a desktop? Different license. That is your RDS CAL. So yeah, remote users need two licenses each. One Server CAL, one RDS CAL. Microsoft sells them separately. It is what it is.

User RDS CAL vs Device RDS CAL

Quick answer: User RDS CAL = one person, any device. Device RDS CAL = one machine, any person. Works the same way as regular Server CALs.

User RDS CAL

You assign it to a person. They can RDP from their work laptop, home PC, phone, whatever. License sticks with them, not the hardware. Makes sense if your people work from home or carry laptops around.

Device RDS CAL

You assign it to a machine. Anyone who sits at that machine can RDP. Day shift, night shift, temp worker, whoever. Warehouse terminals, reception PCs, that kind of thing.

Side-by-Side Comparison

Feature	User RDS CAL	Device RDS CAL
License assigned to	One person	One machine
Devices allowed	Unlimited per user	One specific device
Users allowed	One specific user	Unlimited per device
Best for	Laptop users, work from home	Thin clients, kiosks, shared PCs
Per-license cost	Higher	Lower
Transfer rules	After 90 days or employee exit	Follows hardware

Which One Costs Less?

Device CALs are cheaper per license. But do the math. If your people have a work PC and a home laptop, User CAL actually costs less because you buy one instead of two. You can mix both types in the same setup. Lots of companies do User CALs for office workers and Device CALs for shared workstations.

RDS CAL Version Compatibility

Rule: Newer CAL covers older servers. Older CAL does not cover newer servers. Server 2025 RDS CAL? Works on 2025, 2022, 2019, 2016. Server 2019 RDS CAL? Stops at 2019. Cannot use it on 2022 or newer. Upgrading servers soon? Get the newer CAL now. Works on your current setup and you skip rebuying later. Learned that one from a client who upgraded and suddenly needed 50 new licenses. Got multiple RDS servers running different versions? Your CAL count stays flat. One User RDS CAL covers that person on all your RDS hosts. Microsoft licensing docs confirm this.

The 120-Day RDS Grace Period

You get 120 days to install RDS CALs. After that, unlicensed users get kicked off mid-session. When you spin up Remote Desktop Services for the first time, Windows gives you about four months to sort out licensing. During that window, people can RDP in even without proper CALs. Day 121 hits? Server starts checking. No valid CAL, no connection. I have watched this play out at companies where someone set up RDS for a "quick test" and then forgot about licensing until users started getting booted. That 120-day clock does not pause or reset. Once it runs out, it is gone. Get your licenses installed before you forget.

Setting Up Your RDS License Server

Your RDS CALs live on a license server. It is a Windows Server role that keeps track of which users or devices have been issued licenses. Setup is pretty straightforward:

• Add the Remote Desktop Licensing role (can run on your RDS host or a different server)
• Activate it through Microsoft (needs internet, or you can do phone activation)
• Punch in your RDS CAL keys
• Tell your RD Session Hosts where the license server is

Once it is running, you can open RD Licensing Manager anytime to see how many CALs are in use. Useful for knowing when you are getting low.

Calculating RDS CAL Requirements

Count: One RDS CAL per user or device that RDPs in. Plus a Server CAL for each of them too. Anyone who connects via Remote Desktop needs a license. Does not matter if they log in once a day or once a month. User RDS CAL: One per person. Covers all their devices and all your RDS servers. Device RDS CAL: One per machine. 10 thin clients = 10 Device RDS CALs, no matter how many people rotate through them. Contractors and temps count. If they RDP in, they need licensing too.

Available RDS CAL Packages

We stock Microsoft Windows Remote Desktop Services CAL for Server 2025, 2022, 2019, and 2016. User and Device variants, single licenses or bulk packs.

Why Buy RDS CALs from HypestKey

Been doing this since 2019. We started selling to small businesses that could not get volume deals from Microsoft directly. Now we ship to companies in 40+ countries. All our Remote Desktop Services RDS licenses come through legit Microsoft distribution. We keep relationships with a few authorized resellers so we rarely run out of stock. If the license does not activate, we replace it. If we cannot replace it, you get your money back within 24 hours. No arguments. Questions? We usually get back to you within a couple hours.

Frequently Asked Questions

What is a Windows Server RDS CAL?

License for Remote Desktop access. Lets a user or device RDP into your Windows Server. Separate from your regular Server CAL.

Do I need RDS CAL if I already have Windows Server CAL?

Yep. Both. Server CAL covers file shares and basic stuff. RDS CAL covers the Remote Desktop part. One user RDPing in = two licenses.

User RDS CAL or Device RDS CAL?

User CAL follows the person around, any device. Device CAL sticks to one machine, any person. Remote workers usually need User. Shared terminals usually need Device.

Are RDS CALs version-specific?

Newer covers older, not the other way. 2025 CAL works on 2025, 2022, 2019, 2016. 2019 CAL maxes out at 2019.

How many RDS CALs do I need?

One per user or device that RDPs in. 50 people connecting = 50 User RDS CALs. Plus they each need a regular Server CAL too.

What is the RDS License Server?

Windows Server role that stores and manages your RDS CALs. You add your license keys there and it hands them out to connecting users.

What happens after the 120-day grace period?

Users without licenses get booted. No extension, no reset. Install your CALs before it runs out.

Can RDS CALs be transferred?

User CALs can move to a new person after 90 days, or right away if the original user leaves. Device CALs follow the hardware.