HTTPS handshake returned error SEC_E_ALGORITHM_MISMATCH.

HTTP/1.1 502 Fiddler - Connection Failed
Date: Fri, 25 Nov 2022 02:59:58 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
Cache-Control: no-cache, must-revalidate
Timestamp: 10:59:58.185

[Fiddler] The connection to 'vatrefundvnext.com' failed.  <br />System.Security.SecurityException Failed to negotiate HTTPS connection with server.fiddler.network.https&gt; HTTPS handshake to vatrefundvnext.com (for #66) failed. System.Security.Authentication.AuthenticationException A call to SSPI failed, see inner exception. &lt; The client and server cannot communicate, because they do not possess a common algorithm

HTTPS handshake returned error SEC_E_ALGORITHM_MISMATCH.
Fiddler&#39;s Enabled HTTPS Protocols: [Default] are controlled inside Tools &gt; Options &gt; HTTPS.

 

Some HTTPS sites are unaccessible when using Fiddler

I was able to fix it by enabling the TLS1.2 protocol which is not enabled by default for outgoing connections (Tools / Fiddler Options.. / HTTPS / click on protocols list) 

 

作者:Chuck Lu    GitHub