Microsoft Remote Desktop Services (RDS) allows users to connect graphically to a Windows Server. Depending on how you use the server, you may or may not need to purchase additional licenses.
Scenario 1: Server Administration (Free)
If you only use Remote Desktop to manage the server (e.g., installing updates, configuring IIS, restarting services), you do not need to buy extra licenses.
Every Windows Server license allows for 2 concurrent administrative connections.
You can simply use the default
Administrator account (or create a second admin user) to log in.
Scenario 2: Session Host / Terminal Server (Paid)
If you want to use the server as a workplace for employees (e.g., to run Excel, an ERP system, or access files remotely), you are using it as a "Remote Desktop Session Host".
For this, you must purchase a Subscriber Access License (SAL) for every unique user.
How to calculate the count?
Under the Microsoft SPLA model, licensing is based on Authorized Users, not just concurrent connections.
- Example: You have 10 employees who could log in, but only 3 work at the same time.
- Requirement: You need 10 Licenses (one for each unique account that has access rights).
How to order and activate
RDS licenses are not pre-installed. The setup process involves two steps:
- Order Licenses: Contact support@tilaa.com to add the required number of RDS SALs to your monthly subscription.
- Install Role: You must install the "Remote Desktop Services" role on your VPS and configure the RD Licensing Diagnoser.
- Activate: Our support team will provide you with the license key/agreement number to enter into your server's Licensing Manager.
When you first install the RDS role, it works for 120 days without a license key. Once this period expires, users will be blocked from logging in until you purchase and activate valid licenses.