Virtualization / Hyper-V

Missing HCS services: vfpext causing Hyper-V to not function properly

Problem statement normalized from the linked evidence

CANDIDATE VIEW · NOT A PUBLISHED OPPORTUNITY

Qualification checklist

Gate decision: Aug 15, 2026

At least 3 independent users2 / 3

NOT MET

At least 2 independent discussions1 / 2

NOT MET

✓

At least 1 supporting signal1 Workarounds · 1 Blocked workflows

MET

Observed signals

Users2

Discussions1

Mentions2

Active days2

Source coverageGitHub

TrendUNKNOWN

First seenJul 14, 2026

Last seenJul 15, 2026

Why the gate is holding

Fewer than 3 independent users
Fewer than 2 independent discussions

Competition research, commercial scoring, and Build Gap analysis do not run until this gate passes.

Source evidence

2 evidence records

github · HIGH · Jul 15, 2026

anthropics/claude-code

> Hitting this same issue on Windows 11, build 26200. Confirmed: > > Get-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V-All → Enabled Test-Path C:\Windows\System32\drivers\vfpext.sys → False Directory: C:\Windows\WinSxS\amd64_microsoft-windows-hyper-v-vfpext_31bf3856ad364e35_10.0.26100.8521_none_9c6e9b959bce5329 > > Mode LastWriteTime Length Name > > -a---- 12/6/2026 6:31 PM 1671168 vfpext.sys > > ``` > Directory: > C:\Windows\WinSxS\amd64_microsoft-windows-hyper-v-vfpext_31bf3856ad364e35_10.0.26100.…

BUGBLOCKED WORKFLOW

isigcambodia · anthropics/claude-code

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github · HIGH · Jul 14, 2026

anthropics/claude-code

Environment: Windows 11 Pro, Build 26100.8521 (image version 10.0.26200.8655) Diagnostics performed: - Get-Service vmms, vmcompute, HNS → all Running - Test-Path C:\Windows\System32\drivers\vfpext.sys → True (file present) - driverquery /v | findstr vfpext → no output (driver NOT loaded) - Get-VMSwitch | Get-VMSwitchExtension → only "Microsoft Windows Filtering Platform" and "Microsoft NDIS Capture" present; VFP extension missing entirely from Default Switch - DISM /Online /Add-Package (targeting WinSxS vfpext pack…

BUG

Marcod1987 · anthropics/claude-code

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