diff --git a/package.json b/package.json
index c29b53d..42c1f83 100644
--- a/package.json
+++ b/package.json
@@ -88,6 +88,7 @@
     "asar": true,
     "win": {
       "icon": "build/icon.ico",
+      "requestedExecutionLevel": "highestAvailable",
       "target": [
         "nsis"
       ]
@@ -101,7 +102,7 @@
       "installerIcon": "build/icon.ico",
       "uninstallerIcon": "build/icon.ico",
       "installerHeaderIcon": "build/icon.ico",
-      "perMachine": false,
+      "perMachine": true,
       "multiLanguageInstaller": true,
       "installerLanguages": [
         "tr_TR",
diff --git a/src/main/ipc/index.ts b/src/main/ipc/index.ts
index 9243429..7105b50 100644
--- a/src/main/ipc/index.ts
+++ b/src/main/ipc/index.ts
@@ -1515,4 +1515,11 @@ export function registerIpcHandlers(): void {
             return ''
         }
     })
+
+    ipcMain.handle('app:get-permissions-status', () => {
+        return {
+            hasError: configService.hasPermissionError,
+            path: configService.failedPath
+        }
+    })
 }
diff --git a/src/main/services/ConfigService.ts b/src/main/services/ConfigService.ts
index 43fe1c4..07a4912 100644
--- a/src/main/services/ConfigService.ts
+++ b/src/main/services/ConfigService.ts
@@ -21,25 +21,51 @@ export class ConfigService {
         mariaDbTuning: {} as Record<string, string>
     }
 
+    public hasPermissionError = false
+    public failedPath = ''
+
     constructor() {
         this.templateDir = path.join(app.getAppPath(), 'config')
         const base = this.getDataPath()
         this.configDir = path.join(base, 'generated_configs')
         this.settingsPath = path.join(base, 'settings.json')
 
+        console.log(`[ConfigService] Base data path: ${base}`)
+        console.log(`[ConfigService] Config dir: ${this.configDir}`)
+
         // Ensure directories exist
+        if (!fs.existsSync(base)) {
+            try {
+                fs.mkdirSync(base, { recursive: true })
+            } catch (e: any) {
+                if (e.code === 'EPERM' || e.code === 'EACCES') {
+                    this.hasPermissionError = true
+                    this.failedPath = base
+                }
+                console.error(`Failed to create base directory (${base}):`, e)
+            }
+        }
+
         if (!fs.existsSync(this.configDir)) {
             try {
                 fs.mkdirSync(this.configDir, { recursive: true })
-            } catch (e) {
-                console.error('Failed to create config directory:', e)
+            } catch (e: any) {
+                if (e.code === 'EPERM' || e.code === 'EACCES') {
+                    this.hasPermissionError = true
+                    this.failedPath = this.configDir
+                }
+                console.error(`Failed to create config directory (${this.configDir}):`, e)
             }
         }
 
         if (!fs.existsSync(this.settingsPath)) {
             try {
                 fs.writeFileSync(this.settingsPath, JSON.stringify(this.defaultSettings, null, 2))
-            } catch (e) {
+            } catch (e: any) {
+                if (e.code === 'EPERM' || e.code === 'EACCES') {
+                    this.hasPermissionError = true
+                    this.failedPath = this.settingsPath
+                }
                 console.error('Failed to create settings file:', e)
             }
         }
@@ -51,27 +77,33 @@ export class ConfigService {
      * If not writable (e.g. Program Files), falls back to app.getPath('userData').
      */
     getDataPath(): string {
-        if (!app.isPackaged) {
+        const exeDir = path.dirname(app.getPath('exe'))
+        const isAsar = app.getAppPath().includes('app.asar')
+
+        // If not packaged and not running from asar, we are in development
+        if (!app.isPackaged && !isAsar) {
             return process.cwd()
         }
 
-        const exeDir = path.dirname(app.getPath('exe'))
-        
-        // Check if we are in Program Files
-        const isProgramFiles = exeDir.toLowerCase().includes('program files')
-        
-        if (isProgramFiles) {
+        // We are in production/packaged mode.
+        // Priority 1: Do not even try to use Program Files if we have alternatives.
+        const winProgramFiles = (process.env.ProgramFiles || 'C:\\Program Files').toLowerCase()
+        const winProgramFilesX86 = (process.env['ProgramFiles(x86)'] || 'C:\\Program Files (x86)').toLowerCase()
+        const currentExeDir = exeDir.toLowerCase()
+
+        if (currentExeDir.startsWith(winProgramFiles) || currentExeDir.startsWith(winProgramFilesX86)) {
             return app.getPath('userData')
         }
 
-        // Check for write access
+        // Priority 2: Check for actual write access (Portable Mode check)
         try {
-            const testFile = path.join(exeDir, '.write_test')
+            const testFile = path.join(exeDir, `.write_test_${Date.now()}`)
             fs.writeFileSync(testFile, 'test')
             fs.unlinkSync(testFile)
             return exeDir // Writable (Portable Mode)
         } catch (e) {
-            return app.getPath('userData') // Not writable, use AppData
+            // Not writable, use AppData
+            return app.getPath('userData')
         }
     }
 
diff --git a/src/preload/index.ts b/src/preload/index.ts
index 582a577..eb77c63 100644
--- a/src/preload/index.ts
+++ b/src/preload/index.ts
@@ -57,6 +57,7 @@ const api = {
         electronAPI.ipcRenderer.on('update-progress', listener)
         return () => electronAPI.ipcRenderer.removeListener('update-progress', listener)
     },
+    getPermissionsStatus: () => electronAPI.ipcRenderer.invoke('app:get-permissions-status'),
     invoke: (channel: string, ...args: any[]) => electronAPI.ipcRenderer.invoke(channel, ...args)
 }
 
diff --git a/src/renderer/src/App.tsx b/src/renderer/src/App.tsx
index bef14c3..d929c34 100644
--- a/src/renderer/src/App.tsx
+++ b/src/renderer/src/App.tsx
@@ -318,6 +318,23 @@ function App(): JSX.Element {
             }
         }
 
+        const checkPermissions = async () => {
+            if (window.api && window.api.getPermissionsStatus) {
+                const status = await window.api.getPermissionsStatus()
+                if (status.hasError) {
+                    Swal.fire({
+                        title: t('common.warning'),
+                        text: t('common.admin_required'),
+                        icon: 'warning',
+                        confirmButtonText: t('common.ok'),
+                        confirmButtonColor: '#3085d6',
+                        background: '#1a1d21',
+                        color: '#fff'
+                    })
+                }
+            }
+        }
+
         fetchStatus()
         fetchProjects()
         fetchPhpVersions()
@@ -327,6 +344,7 @@ function App(): JSX.Element {
         fetchSettings()
         fetchCliConfig()
         fetchPmaStatus()
+        checkPermissions()
 
         const removeUpdateStatusListener = window.api.onUpdateStatus ? window.api.onUpdateStatus((st: string, info: any) => {
             setUpdateStatus(st)
diff --git a/src/renderer/src/locales/de.json b/src/renderer/src/locales/de.json
index 5fa863a..51c0fb0 100644
--- a/src/renderer/src/locales/de.json
+++ b/src/renderer/src/locales/de.json
@@ -45,7 +45,9 @@
         "browse": "Durchsuchen",
         "reset_confirm_title": "Sind Sie sicher?",
         "reset_confirm_text": "Möchten Sie die {{service}}-Daten zurücksetzen? Dieser Vorgang löscht alle Daten und führt eine Neuinstallation durch.",
-        "reset_btn": "Ja, Zurücksetzen"
+        "reset_btn": "Ja, Zurücksetzen",
+        "status": "Status",
+        "admin_required": "Bitte versuchen Sie, die Anwendung als Administrator auszuführen."
     },
     "dashboard": {
         "title": "Trunçgil Multi-PHP Server",
diff --git a/src/renderer/src/locales/en.json b/src/renderer/src/locales/en.json
index a3b0779..2ad342f 100644
--- a/src/renderer/src/locales/en.json
+++ b/src/renderer/src/locales/en.json
@@ -51,7 +51,9 @@
         "reset_confirm_text": "Do you want to reset {{service}} data? This operation deletes all data and performs a clean installation.",
         "reset_btn": "Yes, Reset",
         "operating": "Operation in progress...",
-        "please_wait": "Please wait..."
+        "please_wait": "Please wait...",
+        "status": "Status",
+        "admin_required": "Please try running the application as an administrator."
     },
     "dashboard": {
         "title": "Dashboard",
diff --git a/src/renderer/src/locales/ru.json b/src/renderer/src/locales/ru.json
index dee8495..03c69ab 100644
--- a/src/renderer/src/locales/ru.json
+++ b/src/renderer/src/locales/ru.json
@@ -52,7 +52,8 @@
         "reset_btn": "Да, сбросить",
         "operating": "Операция выполняется...",
         "please_wait": "Пожалуйста, подождите...",
-        "status": "Статус"
+        "status": "Статус",
+        "admin_required": "Пожалуйста, попробуйте запустить приложение от имени администратора."
     },
     "dashboard": {
         "title": "Панель управления",
diff --git a/src/renderer/src/locales/tr.json b/src/renderer/src/locales/tr.json
index 3261982..836b3a3 100644
--- a/src/renderer/src/locales/tr.json
+++ b/src/renderer/src/locales/tr.json
@@ -53,7 +53,8 @@
         "reset_btn": "Evet, Sıfırla",
         "operating": "İşlem devam ediyor...",
         "please_wait": "Lütfen bekleyin...",
-        "status": "Durum"
+        "status": "Durum",
+        "admin_required": "Lütfen uygulamayı yönetici olarak çalıştırmayı deneyin."
     },
     "dashboard": {
         "title": "Özet",