Windows update intelligence
Plan9 host folders unavailable in Linux VMs
Host folders may be inaccessible in HCS-managed Linux VMs using Plan9.
ResolvedC3 · Microsoft confirmedMajor impactSnapshot checked 2026-09-15
Does this match your environment?
- Windows scope
- 24H2 / 25H2
- Architecture
- Unknown — not universal
- App / driver
- WSL / Claude Cowork
- Conditions
- Plan9 host sharing; standard Hyper-V VMs without Plan9 are excluded.
A matching version is only a starting point. This page does not diagnose an individual device.
Evidence & current resolution
Microsoft lists this scope as resolved on 2026-09-14. Resolving update: KB5129195.
- Evidence ID
- official-plan9-shared-folders
- Source groups
- 1 · official publication
- Evidence basis
- Manually reviewed public source; no independent device test
Suggest a correction
Recorded timeline
2026-09-08
Originating update released
KB51240082026-09-14
Official resolution recorded
KB5129195
2026-09-15
Snapshot reviewed
Added to this curated collection. Earlier acknowledgement time was not independently captured.
Follow official guidance for your environment. We do not provide automatic rollback or security-disable actions.