diff --git a/apps/desktop/src/app/accounts/settings.component.ts b/apps/desktop/src/app/accounts/settings.component.ts
index 3952335af48..7944e17375c 100644
--- a/apps/desktop/src/app/accounts/settings.component.ts
+++ b/apps/desktop/src/app/accounts/settings.component.ts
@@ -66,6 +66,7 @@ import { SshAgentPromptType } from "../../autofill/models/ssh-agent-setting";
 import { DesktopAutofillSettingsService } from "../../autofill/services/desktop-autofill-settings.service";
 import { DesktopAutotypeService } from "../../autofill/services/desktop-autotype.service";
 import { DesktopBiometricsService } from "../../key-management/biometrics/desktop.biometrics.service";
+import { AutoStartService } from "../../platform/auto-start";
 import { DesktopSettingsService } from "../../platform/services/desktop-settings.service";
 import { DesktopPremiumUpgradePromptService } from "../../services/desktop-premium-upgrade-prompt.service";
 import { NativeMessagingManifestService } from "../services/native-messaging-manifest.service";
@@ -220,6 +221,7 @@ export class SettingsComponent implements OnInit, OnDestroy {
     private changeDetectorRef: ChangeDetectorRef,
     private toastService: ToastService,
     private billingAccountProfileStateService: BillingAccountProfileStateService,
+    private autoStartService: AutoStartService,
   ) {
     this.isMac = this.platformUtilsService.getDevice() === DeviceType.MacOsDesktop;
     this.isLinux = this.platformUtilsService.getDevice() === DeviceType.LinuxDesktop;
@@ -244,7 +246,9 @@ export class SettingsComponent implements OnInit, OnDestroy {
     this.startToTrayText = this.i18nService.t(startToTrayKey);
     this.startToTrayDescText = this.i18nService.t(startToTrayKey + "Desc");
 
-    this.showOpenAtLoginOption = !ipc.platform.isWindowsStore;
+    // Only show the auto-start setting if it's supported on this platform.
+    // The service handles platform-specific checks (Windows Store, Snap, etc.)
+    this.showOpenAtLoginOption = this.autoStartService.shouldDisplaySetting();
 
     // DuckDuckGo browser is only for macos initially
     this.showDuckDuckGoIntegrationOption = this.isMac;
diff --git a/apps/desktop/src/main.ts b/apps/desktop/src/main.ts
index 4734288f3c1..404bd7edbc2 100644
--- a/apps/desktop/src/main.ts
+++ b/apps/desktop/src/main.ts
@@ -47,6 +47,7 @@ import { PowerMonitorMain } from "./main/power-monitor.main";
 import { TrayMain } from "./main/tray.main";
 import { UpdaterMain } from "./main/updater.main";
 import { WindowMain } from "./main/window.main";
+import { AutoStartService, AutoStartStatus, DefaultAutoStartService } from "./platform/auto-start";
 import { NativeAutofillMain } from "./platform/main/autofill/native-autofill.main";
 import { ClipboardMain } from "./platform/main/clipboard.main";
 import { DesktopCredentialStorageListener } from "./platform/main/desktop-credential-storage-listener";
@@ -91,6 +92,7 @@ export class Main {
   sshAgentService: MainSshAgentService;
   sdkLoadService: SdkLoadService;
   mainDesktopAutotypeService: MainDesktopAutotypeService;
+  autoStartService: AutoStartService;
 
   constructor() {
     // Set paths for portable builds
@@ -220,7 +222,12 @@ export class Main {
       this.mainCryptoFunctionService,
     );
 
-    this.messagingMain = new MessagingMain(this, this.desktopSettingsService);
+    this.autoStartService = new DefaultAutoStartService(this.logService);
+    this.messagingMain = new MessagingMain(
+      this,
+      this.desktopSettingsService,
+      this.autoStartService,
+    );
     this.updaterMain = new UpdaterMain(this.i18nService, this.logService, this.windowMain);
 
     const messageSubject = new Subject<Message<Record<string, unknown>>>();
@@ -323,11 +330,13 @@ export class Main {
     this.migrationRunner.run().then(
       async () => {
         await this.toggleHardwareAcceleration();
-        // Reset modal mode to make sure main window is displayed correctly
-        await this.desktopSettingsService.resetModalMode();
+
+        // Initialize and reset desktop settings to ensure consistency
+        await this.initializeDesktopSettings();
+
         await this.windowMain.init();
         await this.i18nService.init();
-        await this.messagingMain.init();
+        this.messagingMain.init();
         // FIXME: Verify that this floating promise is intentional. If it is, add an explanatory comment and ensure there is proper error handling.
         // eslint-disable-next-line @typescript-eslint/no-floating-promises
         this.menuMain.init();
@@ -411,6 +420,29 @@ export class Main {
       });
   }
 
+  /**
+   * Initializes desktop settings to ensure consistency between stored values and system state.
+   * This includes:
+   * - Resetting modal mode to prevent the app from being stuck in modal mode after force-close
+   * - Synchronizing openAtLogin with the actual system auto-start state (when queryable)
+   */
+  private async initializeDesktopSettings(): Promise<void> {
+    // Reset modal mode to make sure main window is displayed correctly
+    await this.desktopSettingsService.resetModalMode();
+
+    // Initialize the openAtLogin setting based on the current system state.
+    // This allows for cases where the user modifies the system state outside of our application.
+    const autoStartStatus = await this.autoStartService.isEnabled();
+
+    // Only sync when we can reliably determine the system state.
+    // For platforms like Flatpak/Snap where the state is unknown, trust the stored value
+    // and don't update from the system.
+    if (autoStartStatus !== AutoStartStatus.Unknown) {
+      const isEnabled = autoStartStatus === AutoStartStatus.Enabled;
+      await this.desktopSettingsService.setOpenAtLogin(isEnabled);
+    }
+  }
+
   private async toggleHardwareAcceleration(): Promise<void> {
     const hardwareAcceleration = await firstValueFrom(
       this.desktopSettingsService.hardwareAcceleration$,
diff --git a/apps/desktop/src/main/messaging.main.ts b/apps/desktop/src/main/messaging.main.ts
index bc8d9ae4685..b00ad8b75fb 100644
--- a/apps/desktop/src/main/messaging.main.ts
+++ b/apps/desktop/src/main/messaging.main.ts
@@ -1,16 +1,11 @@
 // FIXME: Update this file to be type safe and remove this and next line
 // @ts-strict-ignore
-import * as fs from "fs";
-import * as path from "path";
-
-import { app, ipcMain } from "electron";
+import { ipcMain } from "electron";
 import { firstValueFrom } from "rxjs";
 
-import { autostart } from "@bitwarden/desktop-napi";
-
 import { Main } from "../main";
+import { AutoStartService } from "../platform/auto-start";
 import { DesktopSettingsService } from "../platform/services/desktop-settings.service";
-import { isFlatpak, isLinux, isSnapStore } from "../utils";
 
 import { MenuUpdateRequest } from "./menu/menu.updater";
 
@@ -22,19 +17,11 @@ export class MessagingMain {
   constructor(
     private main: Main,
     private desktopSettingsService: DesktopSettingsService,
+    private autoStartService: AutoStartService,
   ) {}
 
-  async init() {
+  init() {
     this.scheduleNextSync();
-    if (isLinux()) {
-      // Flatpak and snap don't have access to or use the startup file. On flatpak, the autostart portal is used
-      if (!isFlatpak() && !isSnapStore()) {
-        await this.desktopSettingsService.setOpenAtLogin(fs.existsSync(this.linuxStartupFile()));
-      }
-    } else {
-      const loginSettings = app.getLoginItemSettings();
-      await this.desktopSettingsService.setOpenAtLogin(loginSettings.openAtLogin);
-    }
     ipcMain.on(
       "messagingService",
       async (event: any, message: any) => await this.onMessage(message),
@@ -78,10 +65,10 @@ export class MessagingMain {
         this.main.trayMain.hideToTray();
         break;
       case "addOpenAtLogin":
-        this.addOpenAtLogin();
+        await this.autoStartService.enable();
         break;
       case "removeOpenAtLogin":
-        this.removeOpenAtLogin();
+        await this.autoStartService.disable();
         break;
       case "setFocus":
         this.setFocus();
@@ -126,49 +113,6 @@ export class MessagingMain {
     this.main.trayMain.updateContextMenu();
   }
 
-  private addOpenAtLogin() {
-    if (process.platform === "linux") {
-      if (isFlatpak()) {
-        autostart.setAutostart(true, []).catch((e) => {});
-      } else {
-        const data = `[Desktop Entry]
-  Type=Application
-  Version=${app.getVersion()}
-  Name=Bitwarden
-  Comment=Bitwarden startup script
-  Exec=${app.getPath("exe")}
-  StartupNotify=false
-  Terminal=false`;
-
-        const dir = path.dirname(this.linuxStartupFile());
-        if (!fs.existsSync(dir)) {
-          fs.mkdirSync(dir);
-        }
-        fs.writeFileSync(this.linuxStartupFile(), data);
-      }
-    } else {
-      app.setLoginItemSettings({ openAtLogin: true });
-    }
-  }
-
-  private removeOpenAtLogin() {
-    if (process.platform === "linux") {
-      if (isFlatpak()) {
-        autostart.setAutostart(false, []).catch((e) => {});
-      } else {
-        if (fs.existsSync(this.linuxStartupFile())) {
-          fs.unlinkSync(this.linuxStartupFile());
-        }
-      }
-    } else {
-      app.setLoginItemSettings({ openAtLogin: false });
-    }
-  }
-
-  private linuxStartupFile(): string {
-    return path.join(app.getPath("home"), ".config", "autostart", "bitwarden.desktop");
-  }
-
   private setFocus() {
     this.main.trayMain.restoreFromTray();
     this.main.windowMain.win.focusOnWebView();
diff --git a/apps/desktop/src/platform/auto-start/auto-start.service.abstraction.ts b/apps/desktop/src/platform/auto-start/auto-start.service.abstraction.ts
new file mode 100644
index 00000000000..71440144ffd
--- /dev/null
+++ b/apps/desktop/src/platform/auto-start/auto-start.service.abstraction.ts
@@ -0,0 +1,42 @@
+/**
+ * Represents the state of the auto-start configuration.
+ */
+export const AutoStartStatus = {
+  /** Auto-start is enabled */
+  Enabled: "enabled",
+  /** Auto-start is disabled */
+  Disabled: "disabled",
+  /** Auto-start state cannot be determined (e.g., Flatpak/Snap) */
+  Unknown: "unknown",
+} as const;
+
+export type AutoStartStatus = (typeof AutoStartStatus)[keyof typeof AutoStartStatus];
+
+/**
+ * Service for managing the application's auto-start behavior at system login.
+ */
+export abstract class AutoStartService {
+  /**
+   * Enables the application to automatically start when the user logs into their system.
+   */
+  abstract enable(): Promise<void>;
+
+  /**
+   * Disables the application from automatically starting when the user logs into their system.
+   */
+  abstract disable(): Promise<void>;
+
+  /**
+   * Checks whether the application is currently configured to start at login.
+   * @returns The auto-start status: `Enabled`, `Disabled`, or `Unknown` if the state cannot be determined.
+   */
+  abstract isEnabled(): Promise<AutoStartStatus>;
+
+  /**
+   * Determines whether the auto-start setting should be displayed in the application UI.
+   * Some platforms (e.g., Snap) manage auto-start externally via package configuration,
+   * so the setting should be hidden from the user.
+   * @returns `true` if the setting should be shown, `false` if it should be hidden.
+   */
+  abstract shouldDisplaySetting(): boolean;
+}
diff --git a/apps/desktop/src/platform/auto-start/auto-start.service.spec.ts b/apps/desktop/src/platform/auto-start/auto-start.service.spec.ts
new file mode 100644
index 00000000000..a6bdec4ad3d
--- /dev/null
+++ b/apps/desktop/src/platform/auto-start/auto-start.service.spec.ts
@@ -0,0 +1,352 @@
+import * as fs from "fs";
+import * as path from "path";
+
+import { app } from "electron";
+import { mock, MockProxy } from "jest-mock-extended";
+
+import { LogService } from "@bitwarden/common/platform/abstractions/log.service";
+import { autostart } from "@bitwarden/desktop-napi";
+
+import * as utils from "../../utils";
+
+import { DefaultAutoStartService } from "./auto-start.service";
+import { AutoStartStatus } from "./auto-start.service.abstraction";
+
+// Mock modules
+jest.mock("fs");
+jest.mock("electron", () => ({
+  app: {
+    getVersion: jest.fn(),
+    getPath: jest.fn(),
+    setLoginItemSettings: jest.fn(),
+    getLoginItemSettings: jest.fn(),
+  },
+}));
+jest.mock("@bitwarden/desktop-napi", () => ({
+  autostart: {
+    setAutostart: jest.fn(),
+  },
+}));
+jest.mock("../../utils", () => ({
+  isFlatpak: jest.fn(),
+  isSnapStore: jest.fn(),
+  isWindowsStore: jest.fn(),
+}));
+
+describe("DefaultAutoStartService", () => {
+  let service: DefaultAutoStartService;
+  let logService: MockProxy<LogService>;
+  let originalPlatform: NodeJS.Platform;
+
+  beforeEach(() => {
+    logService = mock<LogService>();
+    service = new DefaultAutoStartService(logService);
+    originalPlatform = process.platform;
+    jest.clearAllMocks();
+
+    // Default mock implementations
+    (app.getVersion as jest.Mock).mockReturnValue("1.0.0");
+    (app.getPath as jest.Mock).mockImplementation((name: string) => {
+      if (name === "exe") {return "/usr/bin/bitwarden";}
+      if (name === "home") {return "/home/user";}
+      return "";
+    });
+    (utils.isFlatpak as jest.Mock).mockReturnValue(false);
+    (utils.isSnapStore as jest.Mock).mockReturnValue(false);
+    (utils.isWindowsStore as jest.Mock).mockReturnValue(false);
+  });
+
+  afterEach(() => {
+    Object.defineProperty(process, "platform", {
+      value: originalPlatform,
+    });
+  });
+
+  describe("Linux (Flatpak)", () => {
+    beforeEach(() => {
+      Object.defineProperty(process, "platform", {
+        value: "linux",
+      });
+      (utils.isFlatpak as jest.Mock).mockReturnValue(true);
+      (utils.isSnapStore as jest.Mock).mockReturnValue(false);
+    });
+
+    it("should enable autostart using the portal", async () => {
+      (autostart.setAutostart as jest.Mock).mockResolvedValue(undefined);
+
+      await service.enable();
+
+      expect(autostart.setAutostart).toHaveBeenCalledWith(true, []);
+    });
+
+    it("should disable autostart using the portal", async () => {
+      (autostart.setAutostart as jest.Mock).mockResolvedValue(undefined);
+
+      await service.disable();
+
+      expect(autostart.setAutostart).toHaveBeenCalledWith(false, []);
+    });
+
+    it("should handle portal errors gracefully when enabling", async () => {
+      const error = new Error("Portal error");
+      (autostart.setAutostart as jest.Mock).mockRejectedValue(error);
+
+      await service.enable();
+
+      expect(logService.error).toHaveBeenCalledWith(
+        "Failed to enable autostart via portal:",
+        error,
+      );
+    });
+
+    it("should handle portal errors gracefully when disabling", async () => {
+      const error = new Error("Portal error");
+      (autostart.setAutostart as jest.Mock).mockRejectedValue(error);
+
+      await service.disable();
+
+      expect(logService.error).toHaveBeenCalledWith(
+        "Failed to disable autostart via portal:",
+        error,
+      );
+    });
+
+    it("should return Unknown for isEnabled (cannot query portal state)", async () => {
+      const result = await service.isEnabled();
+
+      expect(result).toBe(AutoStartStatus.Unknown);
+    });
+
+    it("should display setting in UI", () => {
+      const result = service.shouldDisplaySetting();
+
+      expect(result).toBe(true);
+    });
+  });
+
+  describe("Linux (Snap)", () => {
+    beforeEach(() => {
+      Object.defineProperty(process, "platform", {
+        value: "linux",
+      });
+      (utils.isFlatpak as jest.Mock).mockReturnValue(false);
+      (utils.isSnapStore as jest.Mock).mockReturnValue(true);
+    });
+
+    it("should not create desktop file when enabling (snap manages autostart)", async () => {
+      await service.enable();
+
+      expect(fs.writeFileSync).not.toHaveBeenCalled();
+      expect(fs.mkdirSync).not.toHaveBeenCalled();
+    });
+
+    it("should not remove desktop file when disabling (snap manages autostart)", async () => {
+      await service.disable();
+
+      expect(fs.unlinkSync).not.toHaveBeenCalled();
+    });
+
+    it("should return Unknown for isEnabled (snap state cannot be queried)", async () => {
+      const result = await service.isEnabled();
+
+      expect(result).toBe(AutoStartStatus.Unknown);
+    });
+
+    it("should hide setting from UI (snap manages autostart)", () => {
+      const result = service.shouldDisplaySetting();
+
+      expect(result).toBe(false);
+    });
+  });
+
+  describe("Linux (Standard)", () => {
+    beforeEach(() => {
+      Object.defineProperty(process, "platform", {
+        value: "linux",
+      });
+      (utils.isFlatpak as jest.Mock).mockReturnValue(false);
+      (utils.isSnapStore as jest.Mock).mockReturnValue(false);
+    });
+
+    it("should create desktop file when enabling", async () => {
+      (fs.existsSync as jest.Mock).mockReturnValue(true);
+
+      await service.enable();
+
+      const expectedPath = path.join("/home/user", ".config", "autostart", "bitwarden.desktop");
+      const expectedContent = `[Desktop Entry]
+Type=Application
+Version=1.0.0
+Name=Bitwarden
+Comment=Bitwarden startup script
+Exec=/usr/bin/bitwarden
+StartupNotify=false
+Terminal=false`;
+
+      expect(fs.writeFileSync).toHaveBeenCalledWith(expectedPath, expectedContent);
+    });
+
+    it("should create autostart directory if it does not exist", async () => {
+      (fs.existsSync as jest.Mock).mockReturnValue(false);
+
+      await service.enable();
+
+      const expectedDir = path.join("/home/user", ".config", "autostart");
+      expect(fs.mkdirSync).toHaveBeenCalledWith(expectedDir, { recursive: true });
+    });
+
+    it("should remove desktop file when disabling", async () => {
+      (fs.existsSync as jest.Mock).mockReturnValue(true);
+
+      await service.disable();
+
+      const expectedPath = path.join("/home/user", ".config", "autostart", "bitwarden.desktop");
+      expect(fs.unlinkSync).toHaveBeenCalledWith(expectedPath);
+    });
+
+    it("should not throw error when removing non-existent desktop file", async () => {
+      (fs.existsSync as jest.Mock).mockReturnValue(false);
+
+      await expect(service.disable()).resolves.not.toThrow();
+
+      expect(fs.unlinkSync).not.toHaveBeenCalled();
+    });
+
+    it("should return Enabled when desktop file exists", async () => {
+      (fs.existsSync as jest.Mock).mockReturnValue(true);
+
+      const result = await service.isEnabled();
+
+      expect(result).toBe(AutoStartStatus.Enabled);
+      const expectedPath = path.join("/home/user", ".config", "autostart", "bitwarden.desktop");
+      expect(fs.existsSync).toHaveBeenCalledWith(expectedPath);
+    });
+
+    it("should return Disabled when desktop file does not exist", async () => {
+      (fs.existsSync as jest.Mock).mockReturnValue(false);
+
+      const result = await service.isEnabled();
+
+      expect(result).toBe(AutoStartStatus.Disabled);
+    });
+
+    it("should display setting in UI", () => {
+      const result = service.shouldDisplaySetting();
+
+      expect(result).toBe(true);
+    });
+  });
+
+  describe("macOS", () => {
+    beforeEach(() => {
+      Object.defineProperty(process, "platform", {
+        value: "darwin",
+      });
+    });
+
+    it("should enable autostart using Electron API", async () => {
+      await service.enable();
+
+      expect(app.setLoginItemSettings).toHaveBeenCalledWith({ openAtLogin: true });
+    });
+
+    it("should disable autostart using Electron API", async () => {
+      await service.disable();
+
+      expect(app.setLoginItemSettings).toHaveBeenCalledWith({ openAtLogin: false });
+    });
+
+    it("should return Enabled when openAtLogin is enabled", async () => {
+      (app.getLoginItemSettings as jest.Mock).mockReturnValue({
+        openAtLogin: true,
+        openAsHidden: false,
+      });
+
+      const result = await service.isEnabled();
+
+      expect(result).toBe(AutoStartStatus.Enabled);
+    });
+
+    it("should return Disabled when openAtLogin is disabled", async () => {
+      (app.getLoginItemSettings as jest.Mock).mockReturnValue({
+        openAtLogin: false,
+        openAsHidden: false,
+      });
+
+      const result = await service.isEnabled();
+
+      expect(result).toBe(AutoStartStatus.Disabled);
+    });
+
+    it("should display setting in UI", () => {
+      const result = service.shouldDisplaySetting();
+
+      expect(result).toBe(true);
+    });
+  });
+
+  describe("Windows", () => {
+    beforeEach(() => {
+      Object.defineProperty(process, "platform", {
+        value: "win32",
+      });
+      (utils.isFlatpak as jest.Mock).mockReturnValue(false);
+      (utils.isSnapStore as jest.Mock).mockReturnValue(false);
+    });
+
+    it("should enable autostart using Electron API", async () => {
+      await service.enable();
+
+      expect(app.setLoginItemSettings).toHaveBeenCalledWith({ openAtLogin: true });
+    });
+
+    it("should disable autostart using Electron API", async () => {
+      await service.disable();
+
+      expect(app.setLoginItemSettings).toHaveBeenCalledWith({ openAtLogin: false });
+    });
+
+    it("should return Enabled when openAtLogin is enabled", async () => {
+      (app.getLoginItemSettings as jest.Mock).mockReturnValue({
+        openAtLogin: true,
+        openAsHidden: false,
+      });
+
+      const result = await service.isEnabled();
+
+      expect(result).toBe(AutoStartStatus.Enabled);
+    });
+
+    it("should return Disabled when openAtLogin is disabled", async () => {
+      (app.getLoginItemSettings as jest.Mock).mockReturnValue({
+        openAtLogin: false,
+        openAsHidden: false,
+      });
+
+      const result = await service.isEnabled();
+
+      expect(result).toBe(AutoStartStatus.Disabled);
+    });
+
+    it("should display setting in UI", () => {
+      const result = service.shouldDisplaySetting();
+
+      expect(result).toBe(true);
+    });
+  });
+
+  describe("Windows Store", () => {
+    beforeEach(() => {
+      Object.defineProperty(process, "platform", {
+        value: "win32",
+      });
+      (utils.isWindowsStore as jest.Mock).mockReturnValue(true);
+    });
+
+    it("should hide setting from UI (Windows Store doesn't support auto-start)", () => {
+      const result = service.shouldDisplaySetting();
+
+      expect(result).toBe(false);
+    });
+  });
+});
diff --git a/apps/desktop/src/platform/auto-start/auto-start.service.ts b/apps/desktop/src/platform/auto-start/auto-start.service.ts
new file mode 100644
index 00000000000..cdc9362e0e9
--- /dev/null
+++ b/apps/desktop/src/platform/auto-start/auto-start.service.ts
@@ -0,0 +1,130 @@
+import * as fs from "fs";
+import * as path from "path";
+
+import { app } from "electron";
+
+import { LogService } from "@bitwarden/common/platform/abstractions/log.service";
+import { autostart } from "@bitwarden/desktop-napi";
+
+import { isFlatpak, isSnapStore, isWindowsStore } from "../../utils";
+
+import { AutoStartService, AutoStartStatus } from "./auto-start.service.abstraction";
+
+/**
+ * Default implementation of the AutoStartService for managing desktop auto-start behavior.
+ *
+ * The implementation varies by platform:
+ * - **Linux (Flatpak)**: Uses the XDG autostart portal via desktop-napi
+ * - **Linux (Standard)**: Creates a .desktop file in ~/.config/autostart/
+ * - **Linux (Snap)**: Auto-start is managed by snap configuration (not handled here)
+ * - **macOS/Windows**: Uses Electron's app.setLoginItemSettings() API
+ */
+export class DefaultAutoStartService implements AutoStartService {
+  constructor(private logService: LogService) {}
+
+  async enable(): Promise<void> {
+    if (process.platform === "linux") {
+      if (isFlatpak()) {
+        // Use the XDG autostart portal for Flatpak
+        await autostart.setAutostart(true, []).catch((e) => {
+          this.logService.error("Failed to enable autostart via portal:", e);
+        });
+      } else if (!isSnapStore()) {
+        // For standard Linux, create a .desktop file in autostart directory
+        // Snap auto-start is configured via electron-builder snap configuration
+        this.createDesktopFile();
+      }
+    } else {
+      // macOS and Windows use Electron's native API
+      app.setLoginItemSettings({ openAtLogin: true });
+    }
+  }
+
+  async disable(): Promise<void> {
+    if (process.platform === "linux") {
+      if (isFlatpak()) {
+        // Use the XDG autostart portal for Flatpak
+        await autostart.setAutostart(false, []).catch((e) => {
+          this.logService.error("Failed to disable autostart via portal:", e);
+        });
+      } else if (!isSnapStore()) {
+        // For standard Linux, remove the .desktop file
+        // Snap auto-start is configured via electron-builder snap configuration
+        this.removeDesktopFile();
+      }
+    } else {
+      // macOS and Windows use Electron's native API
+      app.setLoginItemSettings({ openAtLogin: false });
+    }
+  }
+
+  async isEnabled(): Promise<AutoStartStatus> {
+    if (process.platform === "linux") {
+      if (isFlatpak() || isSnapStore()) {
+        // For Flatpak/Snap, we can't reliably check the state from within the app.
+        // The autostart portal (Flatpak) and snap configuration don't provide query APIs.
+        return AutoStartStatus.Unknown;
+      } else {
+        // For standard Linux, check if the desktop file exists.
+        return fs.existsSync(this.getLinuxDesktopFilePath())
+          ? AutoStartStatus.Enabled
+          : AutoStartStatus.Disabled;
+      }
+    } else {
+      // macOS and Windows use Electron's native API.
+      const loginSettings = app.getLoginItemSettings();
+      return loginSettings.openAtLogin ? AutoStartStatus.Enabled : AutoStartStatus.Disabled;
+    }
+  }
+
+  /**
+   * Creates the .desktop file for Linux autostart.
+   */
+  private createDesktopFile(): void {
+    const desktopFileContent = `[Desktop Entry]
+Type=Application
+Version=${app.getVersion()}
+Name=Bitwarden
+Comment=Bitwarden startup script
+Exec=${app.getPath("exe")}
+StartupNotify=false
+Terminal=false`;
+
+    const filePath = this.getLinuxDesktopFilePath();
+    const dir = path.dirname(filePath);
+
+    if (!fs.existsSync(dir)) {
+      fs.mkdirSync(dir, { recursive: true });
+    }
+
+    fs.writeFileSync(filePath, desktopFileContent);
+  }
+
+  /**
+   * Removes the .desktop file for Linux autostart.
+   */
+  private removeDesktopFile(): void {
+    const filePath = this.getLinuxDesktopFilePath();
+    if (fs.existsSync(filePath)) {
+      fs.unlinkSync(filePath);
+    }
+  }
+
+  shouldDisplaySetting(): boolean {
+    // Windows Store apps don't support auto-start functionality.
+    // On Snap, auto-start is managed by the snap configuration (electron-builder.json).
+    if (isWindowsStore() || isSnapStore()) {
+      return false;
+    }
+
+    // All other platforms support user-configurable auto-start
+    return true;
+  }
+
+  /**
+   * Gets the path to the Linux autostart .desktop file.
+   */
+  private getLinuxDesktopFilePath(): string {
+    return path.join(app.getPath("home"), ".config", "autostart", "bitwarden.desktop");
+  }
+}
diff --git a/apps/desktop/src/platform/auto-start/index.ts b/apps/desktop/src/platform/auto-start/index.ts
new file mode 100644
index 00000000000..13d748b10f3
--- /dev/null
+++ b/apps/desktop/src/platform/auto-start/index.ts
@@ -0,0 +1,2 @@
+export { AutoStartService, AutoStartStatus } from "./auto-start.service.abstraction";
+export { DefaultAutoStartService } from "./auto-start.service";