Software⏱️ 2 min read📅 2026-05-31

How to Fix: Failed to instantiate the default view controller for UIMainStoryboardFile 'Main' - perhaps the designated entry point is not set?

Xcode issue with UIMainStoryboardFile 'Main' - check Storyboard file and set Initial View Controller.

Quick Answer: Check the Main.storyboard file, ensure the view controller is set as the initial view controller.

📋 Table of Contents

  1. 🔍 Why This Happens
  2. ✅ Best Solutions to Fix It
  3. ✨ Wrapping Up

The 'Failed to instantiate the default view controller for UIMainStoryboardFile 'Main' - perhaps the designated entry point is not set?' error occurs when Xcode can't identify the initial view controller in your app's storyboard. This happens because you have created a page-based, single-view, or tabbed app and haven't specified the main entry point.

🔍 Why This Happens

  • [Cause]

✅ Best Solutions to Fix It

Method 1: Set the Main Storyboard File

  1. Step 1: Open your app's Main.storyboard file and select the view controller that you want to be the initial entry point.

Method 2: Use a Launch Screen

  1. Step 1: Create a new .storyboard file in the same location as your Main.storyboard file, but with a different name (e.g., LaunchScreen.storyboard). Designate this view controller as the initial entry point.

✨ Wrapping Up

By following these steps, you should be able to resolve the 'Failed to instantiate the default view controller' error and get your app running smoothly in the iOS Simulator.

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