EErrorHarbor
Error Library

A Hypervisor Has Been Detected: What It Means for Hyper-V and VMware

In Windows System Information, this message is usually informational: a hypervisor is already active, so Windows does not display the normal Hyper-V hardware requirement checklist.

Windows Hyper-VWindows 10/11 · Windows ServerLast reviewed Sep 25, 2026
🎯 You’re likely in the right place if:
System Information or systeminfo says A hypervisor has been detected.A third-party virtualization app reports a Hyper-V or hardware virtualization conflict.You are trying to determine whether the Microsoft hypervisor is active.
Choose the path that matches what you see
Hyper-V / WSL2 / Sandbox worksStop here: the message is expected and does not need to be removed.
VMware Workstation also worksKeep the current security setup unless you have a measured performance or compatibility reason to change it.
VMware/another hypervisor fails to startCheck the product version and whether it supports Windows Hypervisor Platform before disabling Hyper-V.
You plan to disable Hyper-VAccount for Memory Integrity, Credential Guard, WSL2, Sandbox and other dependent features first.
Difficulty: ModerateRisk: Low first
🔎 Quick Check — confirm whether the Windows hypervisor is running

Open System Information and look near the Hyper-V requirements section. The detected-hypervisor message confirms that a hypervisor is already loaded.

msinfo32

Verify: System Information shows A hypervisor has been detected. Features required for Hyper-V will not be displayed.

Did System Information confirm an active hypervisor?
ADSENSE · reserved slot after the first useful step

Why this happens

Microsoft documents this message as the indicator that the Hyper-V hypervisor is already running. Some third-party virtualization applications need direct access to hardware virtualization extensions and can conflict with Hyper-V or Windows security features that depend on it.

Diagnose before changing more

1
Are you troubleshooting Hyper-V itself?
If Hyper-V works, the message is not an error and does not need to be removed.
2
Are you trying to run VMware or another hypervisor?
A third-party hypervisor may need Hyper-V disabled to gain direct hardware virtualization access.
3
Are Memory Integrity or Credential Guard enabled?
Microsoft notes that Windows security features can depend on Hyper-V and may keep the hypervisor active.

Fix #2 — leave the hypervisor enabled if Windows features depend on it

If your goal is to use Hyper-V, Windows Sandbox, WSL2 or virtualization-based security, the detected-hypervisor message is expected. Troubleshoot the specific feature instead of trying to remove the message.

🟡 Before changing configuration: Disabling Hyper-V can affect security and virtualization features that depend on the Microsoft hypervisor.

Verify: The Windows feature you actually need should launch normally. The informational hypervisor message may remain—and that is expected.

Did Fix #2 work?

Fix #3 — disable Hyper-V only when a third-party hypervisor requires it

If a third-party virtualization application explicitly requires direct hardware access, follow Microsoft’s documented Hyper-V disable path and account for dependent features such as Memory Integrity or Credential Guard.

systeminfo
🟡 Keep it reversible: Record your current Windows security settings before disabling virtualization-based protections.

Verify: After the required reboot, use System Information again and test the third-party hypervisor. Judge success by the app working, not merely by making the message disappear.

Did Fix #3 work?

What not to do

Do not disable Memory Integrity or Credential Guard only because System Information says a hypervisor is detected.Do not assume current VMware Workstation always requires Hyper-V to be off; supported versions can use Windows Hypervisor Platform on compatible systems.Do not make boot-configuration changes unless the virtualization application actually requires direct hardware access.

Still seeing the error?

If the message remains after you intentionally disabled Hyper-V, check which Windows virtualization or security feature is still starting the Microsoft hypervisor. Do not assume the message itself indicates malware or a broken installation.

Before escalating, capture:Windows edition/build and whether Memory Integrity is enabledthe exact VMware/virtualization product and versionwhether WSL2, Sandbox or Credential Guard is required on this PCthe exact launch/performance error from the third-party hypervisor

Official references

Microsoft: Virtualization apps can't run alongside Hyper-VHow to detect the running hypervisor and why conflicts occur →Microsoft: Hyper-V host requirementsOfficial Hyper-V requirements and detected-hypervisor output →Broadcom: VMware Workstation with Hyper-V/WHPCurrent Workstation behavior, detection and trade-offs with Hyper-V/WHP →

Still stuck? Ask the community

Share your operating system, software version, exact error text, and which fix you already tried. Another reader may have seen the same setup.

Keep it safe: never post passwords, API keys, access tokens, recovery codes, license keys, private URLs, or confidential logs.
Powered by GitHub DiscussionsSign in with GitHub to comment. Reading comments does not require sign-in.

Loading community discussion…