Controlling the exception thrown when trying to do operations on CHE and opening the login window when the cookie is expired.

2LCS/Forms/MainForm.cs

@@ -1419,6 +1419,32 @@ namespace LCS.Forms
             ChangeProjectMenuItem_Click(null, null);
         }
 
+        public void LoginToLCS()
+        {
+            WebBrowserHelper.FixBrowserVersion();
+            using var form = new Login();
+            form.ShowDialog();
+            if (form.Cancelled) return;
+            _cookies = GetUriCookieContainer();
+            if (_cookies == null) return;
+            _httpClientHelper = new HttpClientHelper(_cookies)
+            {
+                LcsUrl = _lcsUrl,
+                LcsUpdateUrl = _lcsUpdateUrl,
+                LcsDiagUrl = _lcsDiagUrl
+            };
+            if (_selectedProject != null)
+            {
+                _httpClientHelper.ChangeLcsProjectId(_selectedProject.Id.ToString());
+                _httpClientHelper.LcsProjectTypeId = _selectedProject.ProjectTypeId;
+            }
+            changeProjectMenuItem.Enabled = true;
+            cheInstanceContextMenu.Enabled = true;
+            saasInstanceContextMenu.Enabled = true;
+            logoutToolStripMenuItem.Enabled = true;
+            loginToLcsMenuItem.Enabled = false;            
+        }
+
         private void LogonToApplicationToolStripMenuItem_Click(object sender, EventArgs e)
         {
             Cursor = Cursors.WaitCursor;

2LCS/Program.cs

@@ -12,10 +12,12 @@ namespace LCS
             switch (e.Exception.Source)
             {
                 case "System.Net.Http" when e.Exception.Message == $"Response status code does not indicate success: 498 ().":
+                case "mscorlib" when e.Exception.InnerException.Message == $"Response status code does not indicate success: 498 ().":
                     MessageBox.Show("Please login to LCS again. Your cookie is probably invalid or expired.");
                     var mainForm = GetMainForm();
                     mainForm.Cursor = Cursors.Default;
                     mainForm.SetLoginButtonEnabled();
+                    mainForm.LoginToLCS();
                     break;
 
                 default: