diff --git a/hamy-vpn-client-test.exe b/hamy-vpn-client-test.exe
new file mode 100644
index 0000000..a659460
Binary files /dev/null and b/hamy-vpn-client-test.exe differ
diff --git a/main.go b/main.go
index a93e822..bf74297 100644
--- a/main.go
+++ b/main.go
@@ -38,6 +38,7 @@ var (
 	currentProcess *exec.Cmd
 	configs        []Config // Store all configurations
 	activeConfig   int      // Index of the active config (-1 if none)
+	configFilePath string = "configs.json" // Path to save/load configs
 )
 
 // checkSingBox checks if sing-box.exe exists in the bin folder
@@ -49,6 +50,40 @@ func checkSingBox() bool {
 	return true
 }
 
+// loadConfigs loads configurations from file at startup
+func loadConfigs() error {
+	data, err := os.ReadFile(configFilePath)
+	if err != nil {
+		// If file doesn't exist, it's not an error - just start with empty configs
+		if os.IsNotExist(err) {
+			return nil
+		}
+		return err
+	}
+
+	err = json.Unmarshal(data, &configs)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// saveConfigs saves configurations to file
+func saveConfigs() error {
+	data, err := json.MarshalIndent(configs, "", "  ")
+	if err != nil {
+		return err
+	}
+
+	err = os.WriteFile(configFilePath, data, 0644)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
 // isValidVLESS checks if the given URL is a valid VLESS URL
 func isValidVLESS(vlessURL string) bool {
 	// Basic validation for VLESS URL format
@@ -74,6 +109,9 @@ func isValidVLESS(vlessURL string) bool {
 // addConfig adds a new configuration to the list
 func addConfig(title, url string) {
 	configs = append(configs, Config{Title: title, URL: url})
+
+	// Save configurations to file
+	saveConfigs()
 }
 
 // updateConfig updates an existing configuration
@@ -81,6 +119,9 @@ func updateConfig(index int, title, url string) {
 	if index >= 0 && index < len(configs) {
 		configs[index].Title = title
 		configs[index].URL = url
+
+		// Save configurations to file
+		saveConfigs()
 	}
 }
 
@@ -94,6 +135,9 @@ func removeConfig(index int) {
 		if activeConfig >= len(configs) {
 			activeConfig = -1
 		}
+
+		// Save configurations to file
+		saveConfigs()
 	}
 }
 
@@ -491,6 +535,9 @@ func main() {
 	// Set the window size to 200x300 as requested
 	myWindow.Resize(fyne.NewSize(200, 300))
 
+	// Load configurations from file at startup
+	loadConfigs()
+
 	// Initialize active config to -1 (no config selected)
 	activeConfig = -1
 
@@ -599,10 +646,12 @@ func main() {
 		statusLabel.Refresh()
 	})
 	connectButton.Importance = widget.HighImportance
+
+	// Initially disable the button if no configs are available
 	if len(configs) == 0 {
-		connectButton.Disable() // Disable initially until a config is selected
+		connectButton.Disable()
 	} else {
-		connectButton.Enable() // Enable if we have configs
+		connectButton.Enable()
 	}
 
 	// Configurations button - opens a separate window
@@ -632,6 +681,11 @@ func main() {
 				// Refresh the list
 				refreshList()
 				importEntry.SetText("")
+
+				// Enable connect button if we have configs
+				if len(configs) > 0 {
+					connectButton.Enable()
+				}
 			} else if url != "" {
 				dialog.ShowError(errors.New("Невалидная ссылка"), configWindow)
 			}
@@ -688,6 +742,11 @@ func main() {
 
 									// Refresh the list
 									refreshList()
+
+									// Disable connect button if no configs remain or current config was deleted
+									if len(configs) == 0 || activeConfig == -1 {
+										connectButton.Disable()
+									}
 								}
 							},
 							configWindow)
@@ -698,6 +757,10 @@ func main() {
 			newListContainer.OnSelected = func(id widget.ListItemID) {
 				activeConfig = id
 				dialog.ShowInformation("Config Selected", fmt.Sprintf("Active config: %s", configs[id].Title), configWindow)
+
+				// Enable the connect button since a config is selected
+				connectButton.Enable()
+
 				configWindow.Close()
 			}