If you use [Oracle VirtualBox](https://www.virtualbox.org/) on a Windows host machine you will probably already be aware that Hyper-V (Microsoft's equivalent virtual machine software) prevents VirtualBox from using the hardware virtualization features of your system. The hardware virtualization features will be called either VT-x or AMD-V depending on your CPU. If you don't use Microsoft Hyper-V you can disable it:  * Open the **Turn Windows feautres on or off** application * Uncheck the Hyper-V item and it's sub-items * Restart the device Since April 2018 Windows 10 now includes security features called **Core Isolation** and **Memory Integrity** which use virtualization technology to keep important system processes separate from other processes, a technique is often referred to as [sandboxing](https://techterms.com/definition/sandboxing). The benefit of having **Memory Integrity** active is that a malicious program will be unlikely to gain access to memory used by the protected processes. The unfortunate side effect of using the **Memory integrity** feature is that VirtualBox (and other third party virtual machine software) will be unable to use VT-x or AMD-V features. If you upgraded to the April 2018 version of Windows 10 the **Memory Integrity** feature is probably disabled but new installations and future updates are likely to enable it by default, I encountered the problem while testing a [Windows Insider](https://insider.windows.com) preview version. Take a look at this [How-to-Geek article](https://www.howtogeek.com/357757/what-are-core-isolation-and-memory-integrity-in-windows-10/) for a detailed description of the features. If you need to switch off the **Memory Integrity** feature:  * Open **Windows Security** (formerly Windows Defender) * Open the **Device Security** section * Click/tap the **Core isolation details** link * Turn off the **Memory Integrity** toggle switch * Restart the device when prompted (the setting change may not be applied if you decline to restart when prompted) With **Memory Integrity** and Hyper-V disabled you should be free to run Virtual Machines with full hardware acceleration support in VirtualBox.
author | lumendan |
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permlink | windows-10-core-isolation-prevents-virtualbox-from-using-hardware-virtualization-features |
category | boinc |
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author | xavierq98 | ||||||||||||||||||
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