KB5122880

2 regressions reported

regressions

[WORKAROUND]

RDP

Remote Desktop Services might stop responding on Windows 11 23H2 devices after installing KB5122880.

first seen 9/11/2026 · last seen 9/11/2026 · 8 reports · 1 admin

[BREAKS-PROD]

Hyper-V

Host folder shares are unavailable in Hyper-V-based Linux VMs after installing the September 2026 security update KB5122880 on Windows 11, version 23H2.

first seen 9/11/2026 · last seen 9/11/2026 · 8 reports · 1 admin

source_posts

*Remote Desktop Services might stop responding after Sept. 2026 security update
mshealth:status-windows-11-23h2 · 0 pts · 0 comments
*Host folder shares might be unavailable in Hyper-V-based Linux VMs
mshealth:status-windows-11-23h2 · 0 pts · 0 comments