Software⏱️ 3 min read📅 2026-06-11

How to Fix 0xc000035a Error – VirtualBox Windows x64 Error 0xc000035a

VirtualBox error 0xc000035a fix for Windows Server 2008 x64 installation.

Quick Answer: Enable Intel VT-x and AMD-V in VirtualBox settings to resolve the issue.

📋 Table of Contents

  1. 💡 Why You Are Getting This Error
  2. 🚀 How to Resolve This Issue
  3. ✨ Wrapping Up

The VirtualBox Windows x64 Error 0xc000035a is an error that occurs when attempting to install or run a 64-bit version of Windows on VirtualBox. This issue affects users who have installed VirtualBox and are trying to run a 64-bit operating system, such as Windows Server 2008 x64.

This error can be frustrating for users who have invested time and effort into setting up their virtual machine. However, by following the steps outlined in this guide, you should be able to resolve the issue and get your virtual machine up and running smoothly.

💡 Why You Are Getting This Error

  • The primary cause of the VirtualBox Windows x64 Error 0xc000035a is that the host system's CPU architecture does not support 64-bit mode. This can occur when the host system has a 32-bit processor, even if it is an Intel Core i5 vPro with virtualization capabilities.
  • Another possible cause of this error is that the VirtualBox settings are not configured correctly to enable 64-bit mode on the host system. In some cases, enabling all Virtual settings in the BIOS may not be sufficient to resolve the issue.

🚀 How to Resolve This Issue

Enabling Intel VT-x and AMD-V

  1. Step 1: Step 1: Check if Intel VT-x or AMD-V is enabled on your host system's CPU. You can do this by accessing the BIOS settings during startup and looking for these features.
  2. Step 2: Step 2: If Intel VT-x or AMD-V is not enabled, enable it in the BIOS settings. Save the changes and exit the BIOS setup.
  3. Step 3: Step 3: Restart your host system and enter the BIOS settings again to verify that Intel VT-x or AMD-V is now enabled.

Configuring VirtualBox Settings

  1. Step 1: Step 1: Open VirtualBox and navigate to the Control Panel.
  2. Step 2: Step 2: In the Control Panel, click on 'Settings' and then select 'System' from the left-hand menu.
  3. Step 3: Step 3: In the System settings, ensure that the 'Enable Intel VT-x (or AMD-V)' checkbox is selected. Save the changes and exit the VirtualBox settings.

✨ Wrapping Up

By following these steps, you should be able to resolve the VirtualBox Windows x64 Error 0xc000035a and get your virtual machine up and running smoothly. If you are still experiencing issues, it may be worth contacting the VirtualBox support team or seeking further assistance from a qualified IT professional.

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