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Error message: The process was terminated due to an unhandled exception. Microsoft.Rtc.Internal.Sip.TLSException

Possible cause

The SSL certificate was not created with the correct cryptographic service provider and key spec. The KeySpec property sets or retrieves the type of key generated. Valid values are determined by the cryptographic service provider in use, typically

Possible solution

Verify that the Provider, ProviderType, and KeySpec values are the same as the examples below or the CA must reissue a new SSL and appropriate provider and key spec values.
  1. On the computer that hosts
    , open the
    Windows PowerShell
    and type the following command:
    certutil.exe –v –store “my” <
    name of ssl cert
    >” > c:\temp\ssl.txt
  2. In a text editor, open the
    file. By default, the ssl.txt file is located in
  3. Search for
  4. The SSL certificate information should return the following information:
    CERT_KEY_PROV_INFO_PROP_ID(2): Key Container = 9ad85141c0b791ad17f0687d00358b70_dd7675d5-867d-479c-90b0-cd24435fe903 Provider = Microsoft RSA SChannel Cryptographic Provider ProviderType = c Flags = 20 KeySpec = 1 -- AT_KEYEXCHANGE