The underlying connection was closed: An unexpected error occurred on a send.

[AlwaysVbNet]

Hi @kevbite ,

I am getting an error InnerException = {"The underlying connection was closed: An unexpected error occurred on a send."}

when calling this function:

  public Task<CompaniesHouseClientResponse<CompanyProfile>> GetCompanyProfileAsync(string companyNumber, CancellationToken cancellationToken = default(CancellationToken))
        {
            return _companiesHouseCompanyProfileClient.GetCompanyProfileAsync(companyNumber, cancellationToken);
        }

The service was working fine until a few days ago.

Any ideas?

[ermserg]

I'm getting the same exception since about 2 months ago. Any solutions?

[kevbite]

Is this related to #112? I've just run all the tests locally and everything is passing so I'm guessing it's your environment that you're running in.

[ermserg]

The code below has resolved the issue, thank you!

void Application_Start(object sender, EventArgs e)
{
    System.Net.ServicePointManager.SecurityProtocol = System.Net.SecurityProtocolType.Tls12;
}

[kevbite]

@ermserg glad that sorted your issue. I'm going to close this issue but feel free to open another if you have any other problems. Thanks