Windows 11 KB5006674 is the first cumulative update for the new
operating system and it comes with minor bug fixes only.
Since Windows 10 launch in 2015, Microsoft has been focusing on
“Windows as a service” and the model is also applicable for
Windows 11. KB5006674 update includes non-security
compatibility fixes, and if you leave Windows Update to get
updates on its own schedule, this patch will download and
Generally, Windows Updates released on Tuesday include security
fixes, but the first patch for Windows 11 is all about
compatibility fixes. Installing October 2021 cumulative update
will advance systems to Windows 11 Build 22000.258 (version
21H2) and it addresses known compatibility issues.
In addition to a new cumulative update for Windows 11,
Microsoft has also published a new patch for Windows 10.
If you check for updates today, the following patch will appear
on Windows Update:
2021-10 Cumulative Update for Windows 11 for x64-based
To install the patch, use these steps:
- Open Settings > Windows
Update > Get updates and click on
Download Links for Windows 11 KB5006674
Windows 10 KB5006674 Direct Download Links: 64-bit and
Windows 11 KB5006674 (Build 22000.258) Full Changelog
Microsoft noted that it has fixed compatibility issues between
Intel “Killer” and “SmartByte” networking software and the
operating system. The bug affected networking software and it
affected User Datagram Protocol (UDP) packets, which resulted
in performance and other issues.
The bug affected the performance of websites and some browsers
might load websites slower than Windows 10. VPNs might also be
slower. Thankfully, this cumulative update has finally
addressed the problem.
Unresolved issues in Windows 11 KB5006674
Windows 11 is still far from perfect and users are encountering
issues and bugs with the new operating system. Many of the
early issues being discovered in Windows 11 already have been
acknowledged by Microsoft, and most of the problems shouldn’t
cause too much of trouble for users.
Here’s a list of unresolved bugs:
- Compatibility issues can affect certain apps using some
non-ASCII characters in their registry keys. As a result,
affected apps might be unable to launch on Windows 11.
- Microsoft is aware of issues between Oracle VirtualBox and
- A bug could affecting printing functionality of Windows 11
has been acknowledged and it will be getting a fix soon.