Symptoms
Parallels RDP Client shows an error while connecting:
![title alttext](https://kb.parallels.com/Attachments/kcs-38071/2056.png)
Cause
This error usually indicates a problem with RDS licenses CALs.
Resolution
- Verify RDS servers are pointing to your RDS license server
- Verify that the license server has a sufficient number of CALs for clients requiring remote connections.
Please refer to Microsoft TechNet for more information:
https://technet.microsoft.com/ru-ru/library/hh553162(v=ws.10).aspx
In addition, Remote Application Server quick start guide: installation
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