As at June 10th, 2020, we will only support TLS1.2+ connections for Web and API access to the Pactflow platform.
You can check if your API client will work by testing against a TLS1.2 test host such as https://tls-v1-2.badssl.com:1012. For Example:
An unsuccessful connection will look as follows:
A successful connection will look as follows:
You can enable TLS1.2 as per below:
You can also enable future protocols (such as TLS1.3) by allowing the client to negotiate multiple protocols:
See https://docs.microsoft.com/en-us/dotnet/framework/network-programming/tls for best practices on TLS security.