An TLS 1.0 connection request was received from a remote client application, but none of the cipher suites supported by the client application are supported by the server. The SSL connection request has failed. Getting this error when call a particular user on Lync PC to Phone.

Hi Amit, If the certificate being used on the server was generated using the Legacy Key option in the certificate request form, the private key for that certificate will be stored in Microsoft's legacy Cryptographic API framework. When the web server tries to process requests using its new, Cryptographic Next Generation (CNG) framework, it appears that something related to the RSA private key stored in the legacy framework is unavailable to the new framework. As a result, the use of the RSA cipher suites is severely limited. To avoid the issue, you can try to generate the certificate request using the CNG Key template in the custom certificate request wizard. For more information, please see: Why does Window's SSL Cipher-Suite get restricted under certain SSL certificates?+ Besides, the SQL Server Reporting Services forum mainly deal with Reporting Services related issue. If you need further help, I suggest that you ask a question at the Security (Certificate Authority) forum at: http://social.technet.microsoft.com/Forums/en-US/winserversecurity/threads Regards, Mike YinMike Yin TechNet Community Support