URGENT - Windows 11 25H2 — vfpext.sys missing even with Hyper-V fully enabled

Hi,

I just spent £120 upgrading to pro and £200 signng up to cloud plus wasted an entire day trying to fix this and STILL cannot make it work - i need to install cowork in my windows otherwise its pointless for me to have the Pro version. and i need it urgently

I'm hitting an issue on Windows 11 Pro, version 25H2, where the vfpext.sys driver (part of the Hyper-V networking stack) is missing from C:\Windows\System32\drivers, even though the rest of Hyper-V is enabled and working.

What I've confirmed/tried so far:

• Get-Service vmcompute and Get-Service hns both show Running
• Test-Path C:\Windows\System32\drivers\vfpext.sys returns False
• Ran DISM /Online /Cleanup-Image /RestoreHealth /Source:WU — completed successfully, but vfpext.sys is still missing afterward
• Fully disabled and re-enabled Microsoft-Hyper-V-All via PowerShell (Disable-WindowsOptionalFeature / Enable-WindowsOptionalFeature -All), with a full restart in between — no change
• Get-WindowsCapability -Online | Where-Object {$_.Name -like "Hyper"} returns nothing relevant
• Installed the latest July 2026 cumulative/preview updates (KB5101684, KB5101650) — no change

This is blocking an app on my machine that requires the full HCS (Host Compute Service) stack, including this driver specifically.

Has anyone else hit this on 25H2, and is there a known fix or is this an open bug? Would appreciate any pointers — happy to provide further system info (msinfo32, dism logs, etc.) if that helps diagnose it.

Thanks in advance.