ASP.NET - The request was aborted: Could not create SSL/TLS secure channel

StackOverflow https://stackoverflow.com/questions/42215

  •  09-06-2019
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Question

We get the following error;

The request was aborted: Could not create SSL/TLS secure channel

while using a WebRequest object to make an HTTPS request. The funny thing is that this only happens after a while, and is temporarily fixed when the application is restarted, which suggests that something is being filled to capacity or something.

Has anyone seen this kind of thing before?

Was it helpful?

Solution

I seem to recall having this problem last year. I suspect that you aren't closing your WebRequest objects properly, which is why after a certain amount of use it won't allow you to create any new connections.

OTHER TIPS

I have exactly the same problem! I send two requisitions to an HTTPS webservice in close period range (seconds). The first requisition works fine, but the second requisition fails.

I´ve tried to set "System.Net.ServicePointManager.SecurityProtocol = Net.SecurityProtocolType.Ssl3", but the second requisition freezes...

I´m using VB.NET 2008.

Thanks

It looks like it may be a Conenction: Keep-alive thing: http://blogs.x2line.com/al/archive/2005/01/04/759.aspx#780

The similar problem for me fixed by: 

System.Net.ServicePointManager.SecurityProtocol = System.Net.SecurityProtocolType.Tls12;
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