diff -Nur OpenSim-/Framework/Servers/HttpServer/OSHttpServer/HttpClientContext.cs OpenSim/Framework/Servers/HttpServer/OSHttpServer/HttpClientContext.cs
--- OpenSim-/Framework/Servers/HttpServer/OSHttpServer/HttpClientContext.cs	2023-06-02 17:03:08.247494109 +0900
+++ OpenSim/Framework/Servers/HttpServer/OSHttpServer/HttpClientContext.cs	2023-06-02 17:07:01.767935412 +0900
@@ -10,6 +10,8 @@
 using System.Security.Cryptography.X509Certificates;
 using OpenMetaverse;
 
+using System.Text.RegularExpressions;
+
 namespace OSHttpServer
 {
     /// <summary>
@@ -133,8 +135,15 @@
                 if (_cert1 != null)
                 {
                     X509Certificate2 _cert2 = new X509Certificate2(_cert1);
-                    if (_cert2 != null)
-                        SSLCommonName = _cert2.GetNameInfo(X509NameType.SimpleName, false);
+                    if (_cert2 != null) {
+                        string _sbj = _cert2.Subject.ToString();
+                        Match _cn = Regex.Match(_sbj, @"CN=(.*?),");
+                        if (_cn.Success) {
+                            SSLCommonName = _cn.Groups[1].Value;
+                        }
+                        //
+                        //SSLCommonName = _cert2.GetNameInfo(X509NameType.SimpleName, false);
+                    }
                 }
             }