C#C
C#•2y ago
mini

✅ The request was aborted: a protected SSL/TLS channel could not be created

I'm trying to send a web request in .NET 4.8, but I keep getting The request was aborted: a protected SSL/TLS channel could not be created. I've did a lot of googling and people suggested all kinds of stuff, but no matter what I tried it didn't work.
Here's stuff I tried:
ServicePointManager.Expect100Continue = true;
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls | SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls13;
ServicePointManager.ServerCertificateValidationCallback += (sender, certificate, chain, sslPolicyErrors) => true;

I've tried various combinations of security protocols, like specifying just Tls12 which seems to fix it for some, but without any success.
When accessing the URL I'm requesting in the browser and check devtools, I can see that it uses a Tls13 encryption. Not sure if that info is of any help.
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