[German]The cumulative update KB5048667 for Windows 11 24H2 released on December 10, 2024 seems to be causing problems for some users. Some users receive an error during installation. Gamers are complaining about loss of performance in games. Here is a brief overview of the known problems.
Advertising
Windows 11 24H2 Update KB5048667
Cumulative Update KB5048667 from December 2024 does not contain any fixes, but is intended to make various security improvements to Windows 11 24H2. I briefly reported on the update in the article Patchday: Windows 11/Server 2022/2025-Updates (December 10, 2024).
Reports about problems
I haven't followed it in detail, but Bolko pointed in this comment to the post Windows 11 KB5048667 install fails, performance, gaming issues. Windows 11 24H2 affected at Windows Latest.
Installation error 0x800f081f
Windows Latest writes that several readers have reported that the installation of the update is aborted with the error 0x800f081f. The error code 0x800f081f (The source files were not found) is due to corrupted files that prevent the update from being installed.
This article provides some information on this error. As a rule, only a Windows repair via Inplace Upgrade (reinstalling Windows over the existing Windows) helps with this error.
Performance problems after update installation
Some readers also told Windows Latest that there were performance issues with the system and games after installing the update. Some people report that games like Roblox and League of Legends are stuttering.
Advertising
Or the systems react more slowly than usual, especially if Windows 11 24H2 has already been running for some time. Restarting for a short time can help here. Windows Latest suspects problems with CPU allocation (CPU scheduler) in connection with the update.
On reddit.com there is the thread Is anyone else seeing terrible CPU performance after the latest 24h2 update? And it is only fixed after restarting? (KB5048667) Specs in comments, where someone describes the behavior in great detail and asks if other users are seeing the same thing.
In the thread, users confirm their observations about performance losses after installing the December 2024 update. One user writes here that the power settings under System>Power>Power Mode in Windows 11 24H2 are incorrect and overwrite the old power options. The Power Mode overrides the old "Balanced" power scheme, but incorrectly. Every time he wakes his system from sleep mode, the CPU is booted back up to 800 MHz. He could temporarily fix the problem by manually switching the power mode. But there doesn't seem to be a permanent solution (apart from uninstalling the update).
Windows Latest points out in the article Windows 11 KB5048667 install fails, performance, gaming issues. Windows 11 24H2 affected on some rare reports from users on other errors such as playback problems with Netflix and Prime Video.
Similar articles:
Microsoft Security Update Summary (December 10, 2024)
Patchday: Windows 10/Server Updates (December 10, 2024)
Patchday: Windows 11/Server 2022/2025-Updates (December 10, 2024)
Patchday: Windows Server 2012 / R2 (December 10, 2024)
Patchday: Microsoft Office Updates (December 10, 2024)
Advertising
