Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. TLS is serious business.Įrror example: The underlying connection was closed: An unexpected error occurred on a send.
As more modern devices in the world migrate away from TLS v1.0, you may find yourself staring at some weird errors when attempting to send data over RESTful endpoints. Both of these protocols are fairly long in the tooth, with SSL v3.0 being somewhat uncommon in the wild when compared to TLS (Transport Layer Security). Powershell script to enable TLS 1.With Microsoft PowerShell v5.1, the default security protocols used for the Invoke-WebRequest and Invoke-RestMethod cmdlets is either SSL v3.0 or TLS v1.0. We can set programmatically TLS 1.2 Client and Server using the following PowerShell script attached Please refer attached screenshot "TLS Registry path.JPG" for more details. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.2 Navigate to the following path in the SQL server machine and modify the value accordingly: However, it connects successfully to the SQL server if TLS 1.0 and TLS 1.1 are enabled. So if you are using the Adminstudio version less than 2018R3 and below, you will not be able to connect to the SQL server where TLS 1.2 is enabled. SQL Server OLE DB provider does not support TLS 1.2 so AdminStudio will not be able to connect to a SQL server in a TLS 1.2 only environment.Īdminstudio started supporting TLS 1.2 from the 2018 R3 version and above. Please refer attached screenshot "SSL Security Error.JPG" for more details. Why do we receive an error message "SSL Security Error" while connecting to the SQL database after enabling TLS 1.2 and disabling TLS 1.0 and TLS 1.1 in the server machine?
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