The September Patch Tuesday on Windows 11 made headlines. Many hoped for a trouble-free patch, but Microsoft had to act quickly to extinguish fires. A corrective update is already available, and it deserves your full attention.
Windows 11: a colossal patch that did not please everyone
Last Tuesday, September 8, Microsoft released a particularly dense Patch Tuesday, correcting nearly 1,000 security vulnerabilities. An impressive record! However, this hefty security update also brought its share of issues.
Users reported major malfunctions, particularly with Remote Desktop Services (RDS), Hyper-V virtual machines running Linux, and the ongoing struggle with temperamental USB audio devices. In short, some key functionalities went down.
While many hesitated to apply this massive patch, Microsoft quickly announced an emergency fix to calm the unrest. The corrective patch is now available!
The emergency fix: who is it for and what does it actually fix?
This corrective update does not mess around. It targets the major versions of Windows 11: 26H1, 25H2, and 24H2. For these versions, it is a cumulative security update that installs.
In short, it integrates the original Patch Tuesday (in case you hadn’t done it) and, more crucially, fixes the bugs that have spoiled the experience.
On Windows 11 version 23H2 and Windows 10 version 22H2, this update is optional and does not address the security vulnerabilities. You will need to think about installing it manually via Windows Update.
Clear list of affected Windows versions
Here is a precise overview to avoid getting lost:
- Windows 11 version 26H1: KB5129194
- Windows 11 versions 25H2 and 24H2: KB5129195 (and hotpatch KB5129241)
- Windows 11 version 23H2: KB5129242
- Windows Server 2025 and 2022: KB5129235 and KB5129237
- Windows 10 versions 22H2, Enterprise LTSC 2021 and earlier: several specific updates
Not always simple, but good coordination ensures a swift recovery.
Why this rush at Microsoft?
Microsoft acted quickly to release this emergency patch. Not just a whim, but a necessity. Patch Tuesday had introduced bugs that paralyzed certain professional uses like Remote Desktop.
Moreover, the initial patch fixed very critical vulnerabilities, including two that were actively exploited. Leaving machines exposed was not an option. Hence the dual urgency: to seal the vulnerabilities while restoring stability.
The company is working on all fronts to ensure Windows 11 remains reliable. But this agitation also reveals the limits of automatic updates without more thorough testing.
What users need to do immediately
- Check your version of Windows 11 via system settings
- Open Windows Update and check for the latest updates
- Install the corrective update, even if the Patch Tuesday had already been applied
- Restart your machine after installation to ensure everything is properly accounted for
- In case of persistent problems, consult Microsoft forums or specialized sites like 01net or Les Numériques
The still fragile areas after the update
Despite this fix, the system remains under observation. Some users report that USB sound management has not fully returned to normal. The same goes for certain cases with Linux VMs under Hyper-V.
This is still an ongoing project. The situation requires Microsoft to plan other quick updates to refine everything. Total stability is not yet fully achieved.
Professionals using Remote Desktop Services should remain vigilant before pushing their environments into production.
How do I know if my Windows 11 PC is affected by the corrective update?
Open settings, go to ‘System’, then ‘About’, and check your version of Windows. If you are on version 24H2, 25H2, or 26H1, the update directly concerns you.
What should I do if Windows Update does not offer the KB5129195 update?
It is recommended to manually search for the update via Windows Update. Otherwise, you can download the update directly from the Microsoft catalog.
Why has this patch caused so many problems?
Patch Tuesday fixed a record number of vulnerabilities, but in the rush, some fixes were poorly integrated, causing unexpected bugs.
Is Windows 10 also affected by this fix?
Yes, several versions of Windows 10 also receive specific updates to correct certain issues from Patch Tuesday.
Should I install this emergency patch immediately?
Yes, installing this quick fix is recommended to ensure stable and secure operation of your system.
Source: www.lesnumeriques.com