Software⏱️ 3 min read📅 2026-06-11

How to Fix 0x80072746 Error – Error: 0x80072746 The connection to sandbox was lost

Error 0x80072746 occurs when enabling Windows Sandbox feature in Windows 10 Home Edition, causing connection loss.

Quick Answer: Check the system logs for more information and try disabling and re-enabling the feature.

📋 Table of Contents

  1. ⚠️ Common Causes
  2. ✅ Best Solutions to Fix It
  3. 💡 Conclusion

Error: 0x80072746 The connection to sandbox was lost affects users who have enabled Windows Sandbox on their Windows 10 Home Edition laptops. This error can be frustrating, especially when trying to use Windows Sandbox for development or testing purposes.

Enabling Windows Sandbox is a great way to improve security and isolation, but this error message indicates that the connection between the sandbox and the host system has been lost. In this guide, we will walk you through the steps to troubleshoot and resolve this issue.

⚠️ Common Causes

  • The primary reason for this error is a missing or corrupted registry key. When Windows Sandbox is enabled, it requires specific registry keys to be present in order to function correctly. If these keys are missing or corrupted, the connection to the sandbox can be lost.
  • Another possible cause of this error is a misconfigured Windows Sandbox setting. If the sandbox settings are not properly configured, it may lead to issues with the connection between the sandbox and the host system.

✅ Best Solutions to Fix It

Enable Windows Registry Key

  1. Step 1: Step 1: Open the Registry Editor by typing `regedit` in the Run dialog box (Windows key + R). Navigate to the following keys: HKEY_LOCAL_MACHINE/software acebook acebook.exe, HKEY_LOCAL_MACHINE/software irefox irefox.exe, and HKEY_LOCAL_MACHINE/software eams eams.exe. Make sure these keys exist and are not corrupted.
  2. Step 2: Step 2: Create a new DWORD value in each of the above-mentioned registry keys with the name `EnableWindowsSandbox`. Set the value to `1` to enable Windows Sandbox.
  3. Step 3: Step 3: Restart your laptop and try enabling Windows Sandbox again. If the issue persists, proceed to Method 2.

Reset Windows Sandbox Settings

  1. Step 1: Step 1: Open the Start menu and type `Windows Features` in the search bar. Click on 'Turn Windows features on or off'.
  2. Step 2: Step 2: In the Windows Features window, scroll down to the 'Remote Desktop' section and uncheck the box next to 'Remote Desktop Services'. Then, scroll down further and check the box next to 'Windows Sandbox'.

💡 Conclusion

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