Release v0.0.0.23

On domain PCs, HKCU policies are controlled by GPO and the
Trust Center settings are greyed out. Now also writes to HKLM
(requires admin rights) which overrides GPO settings.

Shows orange hint in settings when GPO lock is detected:
"Auf Domaenen-PCs: App einmalig als Admin starten!"

The app tries all 8 combinations: HKCU/HKLM x Policies/direct
x 16.0/15.0. Silently skips paths where permissions are denied.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

installer/setup.iss

@@ -2,7 +2,7 @@
 ; Erfordert Inno Setup 6.x (https://jrsoftware.org/isinfo.php)
 
 #define MyAppName "Starface Outlook Sync"
-#define MyAppVersion "0.0.0.20"
+#define MyAppVersion "0.0.0.23"
 #define MyAppPublisher "HackerSoft - Hacker-Net Telekommunikation"
 #define MyAppURL "https://www.hacker-net.de"
 #define MyAppExeName "StarfaceOutlookSync.exe"

src/StarfaceOutlookSync/Models/UserSettings.cs

@@ -40,40 +40,81 @@ namespace StarfaceOutlookSync.Models
         }
 
         public void ApplyOutlookSecuritySetting()
+        {
+            var versions = new[] { "16.0", "15.0" };
+
+            var securityValues = new (string name, int value)[]
+            {
+                ("ObjectModelGuard", 2),
+                ("PromptOOMAddressBookAccess", 2),
+                ("PromptOOMAddressInformationAccess", 2),
+                ("PromptOOMSend", 2),
+                ("PromptOOMSaveAs", 2),
+                ("PromptOOMFormulaAccess", 2),
+                ("PromptOOMCustomAction", 2),
+                ("PromptSimpleMAPISend", 2),
+                ("PromptSimpleMAPINameResolve", 2),
+                ("PromptSimpleMAPIOpenMessage", 2),
+                ("AdminSecurityMode", 3),
+            };
+
+            // In alle moeglichen Pfade schreiben (HKCU + HKLM, Policies + direkt)
+            var roots = new[] { Registry.CurrentUser, Registry.LocalMachine };
+            var prefixes = new[]
+            {
+                @"Software\Policies\Microsoft\Office",
+                @"Software\Microsoft\Office"
+            };
+
+            foreach (var ver in versions)
+            {
+                foreach (var root in roots)
+                {
+                    foreach (var prefix in prefixes)
+                    {
+                        var regPath = $@"{prefix}\{ver}\Outlook\Security";
+                        try
+                        {
+                            if (AutoAcceptOutlookPrompt)
+                            {
+                                var key = root.CreateSubKey(regPath);
+                                if (key != null)
+                                {
+                                    foreach (var (name, value) in securityValues)
+                                        key.SetValue(name, value, RegistryValueKind.DWord);
+                                    key.Close();
+                                }
+                            }
+                            else
+                            {
+                                try { root.DeleteSubKey(regPath, false); } catch { }
+                            }
+                        }
+                        catch { } // Kein Fehler wenn Rechte fehlen - naechsten Pfad versuchen
+                    }
+                }
+            }
+        }
+
+        /// <summary>
+        /// Prueft ob die Outlook-Sicherheitseinstellung per GPO blockiert wird.
+        /// </summary>
+        public static bool IsOutlookSecurityLockedByPolicy()
         {
             try
             {
-                var regPath = @"Software\Policies\Microsoft\Office\16.0\Outlook\Security";
-
-                if (AutoAcceptOutlookPrompt)
+                // Wenn HKLM Policies gesetzt sind und wir dort nicht schreiben koennen
+                var key = Registry.LocalMachine.OpenSubKey(
+                    @"Software\Policies\Microsoft\Office\16.0\Outlook\Security", false);
+                if (key != null)
                 {
-                    // Alle Outlook Object Model Guard Prompts unterdruecken
-                    var key = Registry.CurrentUser.CreateSubKey(regPath);
-                    key.SetValue("ObjectModelGuard", 2, RegistryValueKind.DWord);
-                    key.SetValue("PromptOOMAddressBookAccess", 2, RegistryValueKind.DWord);
-                    key.SetValue("PromptOOMAddressInformationAccess", 2, RegistryValueKind.DWord);
-                    key.SetValue("AdminSecurityMode", 3, RegistryValueKind.DWord);
+                    var val = key.GetValue("AdminSecurityMode");
                     key.Close();
-                }
-                else
-                {
-                    // Zurueck auf Standard (Werte loeschen)
-                    try
-                    {
-                        var key = Registry.CurrentUser.OpenSubKey(regPath, true);
-                        if (key != null)
-                        {
-                            try { key.DeleteValue("ObjectModelGuard"); } catch { }
-                            try { key.DeleteValue("PromptOOMAddressBookAccess"); } catch { }
-                            try { key.DeleteValue("PromptOOMAddressInformationAccess"); } catch { }
-                            try { key.DeleteValue("AdminSecurityMode"); } catch { }
-                            key.Close();
-                        }
-                    }
-                    catch { }
+                    if (val != null) return true;
                 }
             }
             catch { }
+            return false;
         }
     }
 }

src/StarfaceOutlookSync/StarfaceOutlookSync.csproj

@@ -7,9 +7,9 @@
     <AssemblyTitle>Starface Outlook Sync</AssemblyTitle>
     <Company>HackerSoft - Hacker-Net Telekommunikation</Company>
     <Product>Starface Outlook Sync</Product>
-    <Version>0.0.0.20</Version>
-    <AssemblyVersion>0.0.0.20</AssemblyVersion>
-    <FileVersion>0.0.0.20</FileVersion>
+    <Version>0.0.0.23</Version>
+    <AssemblyVersion>0.0.0.23</AssemblyVersion>
+    <FileVersion>0.0.0.23</FileVersion>
     <Description>Synchronisiert Outlook-Kontakte mit Starface Telefonanlage</Description>
     <Copyright>Stefan Hacker - HackerSoft</Copyright>
     <RuntimeIdentifier>win-x64</RuntimeIdentifier>

src/StarfaceOutlookSync/UI/AboutForm.cs

@@ -27,7 +27,7 @@ namespace StarfaceOutlookSync.UI
 
             var lblVersion = new Label
             {
-                Text = "Version 0.0.0.20",
+                Text = "Version 0.0.0.23",
                 Left = 0, Top = 56, Width = 340, Height = 20,
                 TextAlign = ContentAlignment.MiddleCenter,
                 ForeColor = Color.Gray

src/StarfaceOutlookSync/UI/MainForm.cs

@@ -76,8 +76,8 @@ namespace StarfaceOutlookSync.UI
         private void InitializeComponent()
         {
             Text = "Starface Kontakt-Sync";
-            Size = new Size(620, 450);
-            MinimumSize = new Size(500, 350);
+            Size = new Size(830, 450);
+            MinimumSize = new Size(830, 350);
             StartPosition = FormStartPosition.CenterScreen;
             Font = new Font("Segoe UI", 9);
             Icon = AppIcon.GetIcon();

src/StarfaceOutlookSync/UI/SettingsForm.cs

@@ -47,20 +47,33 @@ namespace StarfaceOutlookSync.UI
                 Checked = _settings.AutoAcceptOutlookPrompt
             };
 
+            var hintText = "Hinweis: Outlook muss nach Aenderung neu gestartet werden.";
+            if (UserSettings.IsOutlookSecurityLockedByPolicy())
+                hintText += "\nAuf Domaenen-PCs: App einmalig als Admin starten!";
+
+            var lblHint = new Label
+            {
+                Text = hintText,
+                Left = 38, Top = 102, Width = 310, Height = 36,
+                ForeColor = UserSettings.IsOutlookSecurityLockedByPolicy() ? Color.OrangeRed : Color.Gray,
+                Font = new Font("Segoe UI", 8)
+            };
+
             _btnSave = new Button
             {
-                Text = "Speichern", Left = 95, Top = 160, Width = 85, Height = 28,
+                Text = "Speichern", Left = 95, Top = 170, Width = 85, Height = 28,
                 DialogResult = DialogResult.None
             };
             _btnSave.Click += (s, e) => Save();
 
             _btnCancel = new Button
             {
-                Text = "Abbrechen", Left = 189, Top = 160, Width = 85, Height = 28,
+                Text = "Abbrechen", Left = 189, Top = 170, Width = 85, Height = 28,
                 DialogResult = DialogResult.Cancel
             };
 
-            Controls.AddRange(new Control[] { _chkStartMinimized, _chkSyncOnStart, _chkAutoAcceptOutlook, _btnSave, _btnCancel });
+            Size = new Size(380, 260);
+            Controls.AddRange(new Control[] { _chkStartMinimized, _chkSyncOnStart, _chkAutoAcceptOutlook, lblHint, _btnSave, _btnCancel });
             AcceptButton = _btnSave;
             CancelButton = _btnCancel;
         }