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5 Ways to Fix VT-x Is Not Available (VERR_VMX_NO_VMX)
Discover expert solutions to get rid of the error
5 min. read
Updated onOctober 4, 2023
updated onOctober 4, 2023
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Key notes
Virtual Machineforms an integral part of many PCs by eliminating the need for another device. But running one is not as easy, and users encounter various errors due to the dependency on a wide array of settings. One such is theVT-x is not available (VERR_VMX_NO_VMX)error.
Though commonly seen on VirtualBox, other similar software can throw the error and prevent users from running the Virtual Machine. Fret not! It’s usually a trivial problem to blame, and you can get things up and running in no time. So, let’s find out!
Why is my VTx not working in VirtualBox?
Here are a few reasons you are facing the problem:
How do I fix error VT-x is not available (VERR_VMX_NO_VMX)?
Before we move to the slightly complex solutions, here are a few quick ones to try:
If none work, move to the fixes listed next.
1. Enable VT-x in BIOS
When faced with theVT-x is not available (VERR_VMX_NO_VMX)Ubuntu error, your primary approach should be to ensure that VT-x is indeed enabled. Also, if you find it already activated, re-enable the setting.
2. Disable Hyper-V
While this is not the case by default, an update led to Hyper-V conflicting with VT-x when enabled, which triggered theVT-x is not available (VERR_VMX_NO_VMX)Windows 7 error. And disabling the former, in this case, should get things up and running.
3. Turn off Memory Integrity
Another feature often found to conflict with the Virtual Machine isCore isolationorMemory integrity,which triggers theVT-x is not available (VERR_VMX_NO_VMX)Windows Server 2019 error.
The purpose ofMemory integrityis to prevent unauthorized code from running on the PC. Besides this, it may also conflict withperformance-boosting software. So, you should try disabling these and verify whether the error is fixed.
4. Uninstall your antivirus
In case the previous solutions didn’t work, it could the antivirus to blame for theVT-x is not available (VERR_VMX_NO_VMX)Oracle VirtualBox error.
Make sure to remove any cache or revert changes made by the program. A quick solution to ensure this is to use adedicated uninstaller software, which clears the Registry entries created by the antivirus, thus reverting any changes made to the PC.
5. Downgrade the VM software
When nothing works, it’s mostly like non-compatibility with the recent version of the VM software to blame for theVT-x is not available (VERR_VMX_NO_VMX)Windows 10 error. And for this, the only viable solution is to downgrade the software.
Check which version you have,uninstall the software, and then download an older version from the official website. Here are the direct links to download pages for the various VM software:
That’s it! And after you have fixed the error, do not forget to find out how toenable Windows 11 on a Virtual Machineand test out the latest iteration before making the final upgrade.
For any queries or to share what worked for you, drop a comment below.
More about the topics:virtual machine,VirtualBox
Kazim Ali Alvi
Windows Hardware Expert
Kazim has always been fond of technology, be it scrolling through the settings on his iPhone, Android device, or Windows PC. He’s specialized in hardware devices, always ready to remove a screw or two to find out the real cause of a problem.
Long-time Windows user, Kazim is ready to provide a solution for your every software & hardware error on Windows 11, Windows 10 and any previous iteration. He’s also one of our experts in Networking & Security.
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Kazim Ali Alvi
Windows Hardware Expert
Kazim is specialized in hardware devices, always ready to remove a screw or two to find out the real cause of a problem.
