## Direct Answer
To fix VirtualBox not working on a Mac, try updating VirtualBox to the latest version, check for compatible macOS versions, and ensure that the VirtualBox kernel extension is loaded. If issues persist, reinstall VirtualBox or reset the NVRAM.
## Step-by-Step Guide
To troubleshoot VirtualBox issues on a Mac, follow these steps:
1. **Update VirtualBox**: Download and install the latest version of VirtualBox from the official website.
2. **Check macOS Compatibility**: Ensure your Mac’s operating system is compatible with the installed version of VirtualBox.
3. **Load VirtualBox Kernel Extension**: Go to System Preferences > Security & Privacy > General, and click “Allow” next to the VirtualBox kernel extension.
4. **Reinstall VirtualBox**: If issues persist, uninstall VirtualBox and restart your Mac. Then, download and install the latest version.
5. **Reset NVRAM**: Restart your Mac, then immediately hold down the Command + Option + P + R keys. Release the keys when you hear the boot chime for the second time.
## FAQ
* **Q: Why is VirtualBox not working on my Mac?**
A: VirtualBox may not work due to outdated software, incompatible macOS versions, or issues with the kernel extension.
* **Q: How do I update VirtualBox on a Mac?**
A: Download the latest version from the official VirtualBox website and follow the installation prompts.
* **Q: What if I’m still experiencing issues after trying the above steps?**
A: Contact Oracle support for further assistance or consider alternative virtualization software.
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