Yes. RDS CALs can be added at any time through the Remote Desktop Licensing Manager without downtime.
This often happens when the licensing server is not activated or CALs are missing. Activating the license server and installing valid CALs fixes the problem.
Count how many users or devices connect at the same time. Choose User CALs if people use multiple devices, or Device CALs if multiple users share the same machines.
This usually means the RDS licensing mode (User or Device) hasn’t been set on the server. Once the correct mode is configured and valid CALs are installed, the error disappears.
No. An RDS server must be configured to use either User CALs or Device CALs, not both at the same time.
Windows Server RDS 2016 environments are commonly used alongside business Operating systems
and client PCs running Windows 10 or Windows 11, while applications such as Microsoft Office, including
Microsoft Office 2024 and Microsoft Office 2021, are delivered through RDS. To secure terminal
servers, businesses rely on Antivirus licenses like Kaspersky, combined with backup and recovery tools
from EaseUS and value-packed offers available in the Bundle section.