Uploaded March 2020 | Updated September 2026, 6 hours ago

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"BlueStacks is unable to use hardware-assisted virtualization for better performance.
Please check BIOS settings and ensure it is enabled. If you are using Avast or 360 Antivirus, please check antivirus settings and ensure that their use of hardware-assisted virtualization is disabled. Check FAQ for details."

If you got the same error message when you open BlueStacks, this video might help you to solve the issue. If you ignore this error, you will experience lag and slow performance when you play a game.
So in this video, I will show you how to solve the Virtualization error in BlueStacks on a Windows pc without going to Bios. Though there are different ways to solve this problem, we will do the easiest way to solve it through disabling the Use of Antivirus Hardware-assisted Virtualization.
If you are not using Avast Antivirus but you still have this kind of error, then this video might help you:

How To Enable Virtualization Technology on Windows
youtu.be/-KZtR9C_wKo

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►Chapter and Timestamps:
00:00 | Start
00:25 | Virtualization Error
00:47 | Open Avast Antivirus
01:04 | Menu
01:06 | Settings Menu
01:12 | Troubleshooting Settings
01:16 | Uncheck Hardware-Assisted Virtualization
01:44 | Restart Your PC
02:02 | Open BlueStacks


🔸Q: Why Avast Antivirus has this kind of option?

🔹A: In theory, hardware-assisted virtualization can make hypervisor-based rootkits possible. However, this type of malware already requires extremely high privileges and is not a particular threat. Furthermore, hardware-assisted virtualization can be used by Windows to supplement its sandbox for added security. It's not a security issue so much as a feature optionally used by one theoretical kind of malware.
A hypervisor is a software that is able to run a virtual operating system underneath it. The hypervisor, in other words, pretends to be real hardware so the operating system running under it doesn't need to be aware of this fact. Hardware-assisted virtualization (called VT-x for Intel and AMD-V for AMD) is simply a CPU feature that allows hypervisors to run at native performance as if the hypervisor wasn't there.
Avast is capable of using hardware-assisted virtualization to provide better anti-virus protection. However, because this can cause compatibility issues with other software, an option is provided to disable this functionality.
That is, if you turn off the "Enable hardware-assisted virtualization" you are not telling Avast to disable hardware virtualization on the PC; rather, you are telling Avast not to make use of the hardware virtualization functionality itself.


►Related Videos:

𒊹Bluestacks Performance Warning - youtu.be/3N9BaPPMK6c

𒊹Enable Virtualization Technology -
youtu.be/-KZtR9C_wKo



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