#Windows server test tls 1.2 support verification
#Windows server test tls 1.2 support windows 8.1

But in our test code, we also have control over this. Note If the application has set the ServicePointManager.SecureProtocol in code or through config files to a specific value or uses the SslStream.AuthenticateAs* APIs to specify a specific SslProtocols enum, the registry setting behavior does not occur. “SystemDefaultTlsVersions”=dword:00000001 This allows using the operating system defaults for SSL and TLS instead of the hardcoded.

#Windows server test tls 1.2 support windows 8.1

NET Framework 3.5 on Windows 8.1 and Windows Server 2012 R2 is installed. We also check if KB3154520 – Support for TLS System Default Versions included in the. These were not present on the Windows Server 2012 R2 host but also not on the Windows Server 2016 or 2019 hosts we use for comparison. You have to do this is you want to disable it and re-enable it. These versions support TLS 1.2 without issues normally.Īlso, on Windows Server 2012 R2 TLS 1.2 is enabled by default and does not require editing the registry to enable it. We also checked that the Windows Server 201 R2 hosts were fully up to date and had either. But then one would expect this to happen every time. “An existing connection was forcibly closed by the remote host” was the clearest hint for this. All indications pointed to a (TLS) configuration issue. The error itself did not happen constantly, but rather infrequently. The network was fine, so I could take this cause of the table.

#Windows server test tls 1.2 support verification

I did a quick verification of any network issues. Intermittent TLS issues with Windows Server 2012 R2 connecting to SQL Server 2016 running on Windows Server 2016 or 2019 But in the end, there was indeed an issue. Good code should have such mechanisms implemented. Now actually retrying the connection in the code could work around this. (provider: SSL Provider, error: 0 – An existing connection was forcibly closed by the remote host.) -> 32Exception: An existing connection was forcibly closed by the remote host > : A connection was successfully established with the server, but then an error occurred during the login process. > : The execution of the InstancePersistenceCommand named CreateWorkflowOwner was interrupted by an error. : The InstanceStore could not be initialized. Normally everything went fine but one in every 250 to 500 connection of the server-client to a database on SQL Server 2016 they got the error below.

They suffered from intermittent TLS issues with Windows Server 2012 R2 connecting to SQL Server 2016 running on Windows Server 2016 or 2019. Someone asked me to help investigate an issue that was hindering client/server applications.