Missing HCS services: vfpext error causing Cowork tab to be disabled/greyed out on Windows 11 Pro.
Missing HCS services: vfpext error causing Cowork tab to be disabled/greyed out on Windows 11 Pro.
Problem statement normalized from the linked evidence
CANDIDATE VIEW · NOT A PUBLISHED OPPORTUNITY
01
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 · 2 Blocked workflows
MET
02
Observed signals
Users2
Discussions1
Mentions2
Active days2
Source coverageGitHub
TrendUNKNOWN
First seenJul 12, 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.
03
Source evidence
2 evidence records
github · MEDIUM · Jul 15, 2026
anthropics/claude-code
Same "Missing HCS services: vfpext" here, and I traced it to a component-store mismatch after upgrading to Windows 11 25H2. Sharing the full diagnosis in case it helps fix the detection/provisioning. **Environment** - OS: Windows 11 25H2, build 10.0.26200.8875 (Pro) - Claude Desktop: latest - Symptom: Cowork tab greyed out, tooltip "Missing HCS services: vfpext" (HNS and vmcompute were fine — only vfpext missing) **What I verified** - `Get-Service vmcompute, hns` → both Running - `Get-Service vfpext` → service does…
Also hitting this on Windows 11 Pro. Same "Missing HCS services: vfpext" error, Cowork tab disabled/greyed out. Claude Desktop version: Claude 1.20186.1 (df1d8a) 2026-07-10T21:55:12.000Z Windows build: Version 25H2 (OS Build 26200.8655) Confirmed Hyper-V, Virtual Machine Platform, and Hypervisor Platform were not and then I enabled all via optionalfeatures.exe Hyper-V enabled plus restart did not resolve