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Host folder shares might be unavailable in Hyper-V-based Linux VMs

Microsoft lists this known issue for 6 Windows versions; its status is Resolved. It started with KB5122878, KB5122880, KB5124008 and 1 more updates. Microsoft resolved it in KB5129194, KB5129195, KB5129236 and 1 more updates.

Resolved1 version

Facts

Microsoft id
4983
Status
Resolved
Products
Windows 10 Enterprise LTSC 2021, Windows 10, version 21H2, Windows 10, version 22H2, Windows 11, version 23H2, Windows 11, version 24H2, Windows 11, version 25H2, Windows 11, version 26H1
Versions
Windows 10 Enterprise LTSC 2021, Windows 10, version 22H2, Windows 11, version 23H2, Windows 11, version 24H2, Windows 11, version 25H2, Windows 11, version 26H1
Originating KBs
KB5122878, KB5122880, KB5124008, KB5124012
Resolved by
KB5129194, KB5129195, KB5129236, KB5129242
First captured by us
(from our first import of this list)
Microsoft last modified
Source
Windows known issues · open the original at Microsoft

Status per Windows version

VersionStatusOriginating updateOpenedResolved
Windows 11, version 26H1Resolved KB5129194OS Build 28000.2954, KB5124012, 2026-09-082026-09-11 09:22 UTC2026-09-14 17:00 UTC
Windows 11, version 25H2Resolved KB5129195OS Build 26200.9445, KB5124008, 2026-09-082026-09-11 09:22 UTC2026-09-14 17:00 UTC
Windows 11, version 24H2Resolved KB5129195OS Build 26100.9445, KB5124008, 2026-09-082026-09-11 09:22 UTC2026-09-14 17:00 UTC
Windows 11, version 23H2Resolved KB5129242OS Build 22621.7582, KB5122880, 2026-09-082026-09-11 09:22 UTC2026-09-14 17:00 UTC
Windows 10, version 22H2Resolved KB5129236OS Build 19045.7725, KB5122878, 2026-09-082026-09-11 09:22 UTC2026-09-14 17:00 UTC
Windows 10 Enterprise LTSC 2021Resolved KB5129236OS Build 19044.7725, KB5122878, 2026-09-082026-09-11 09:22 UTC2026-09-14 17:00 UTC

Microsoft says

Updated (9/14): The resolution section was updated.

Windows known issues,

Read Microsoft's full post

What Microsoft changed

One version so far. If Microsoft edits it, each change shows here with what was removed and added.

  1. First version we captured ·

    As first seen: Resolved
    Status
    Resolved

    Seen by us · Microsoft's timestamp · Microsoft's page

Mentioning the same Microsoft ids

Last updated