Windows 11 Update KB5043076: Potential Performance Boosts and Important Issues to Consider

Windows 11 KB5043076 is an important update that introduces AMD Branch Prediction Optimization, which was initially released last month with the optional update (KB5041587). However, there are issues—specifically, the September 2024 Update KB5043076 is reportedly failing to install and triggering various problems, such as File Explorer crashes when opened from the taskbar.

This update, KB5043076, is noteworthy because it includes AMD Branch Prediction optimization that was first rolled out alongside Windows 11 24H2. Upon installing the KB5041587 update, users can experience performance improvements of up to 10% with the Ryzen 7700X and an impressive 11% boost with the 9700X. In initial benchmarks, several games have also shown performance enhancements ranging from 5% to 10%.

The September 2024 KB5043076 update features AMD Branch Prediction optimization, which aims to enhance performance specifically for Ryzen 9000 processors, although many Ryzen 7000-series chips are benefiting as well. This makes it one of the most significant releases for AMD, leading many users to rush to download it.

Unfortunately, numerous users have reported that Windows 11’s September 2024 update is fraught with issues.

For instance, some users have noted that File Explorer crashes upon launching it from the taskbar. One individual pointed out that the crash can occur intermittently and sometimes is linked to a specific. dll file. This issue has been particularly prevalent following the installation of the Windows 11 September 2024 Update.

In addition, there are multiple reports regarding Phishing Protection in Windows Security resetting to “off”status after the PC is restarted or shut down.

There are also issues concerning Windows.UI.Xaml.dll that emerged after Patch Tuesday in September 2024. A user indicated, “KB5043076 has issues with Windows.UI.Xaml.dll and msvcrt.dll, causing problems with anything that utilizes consent.exe and SystemSettings.exe. Since it impacts consent.exe, also known as User Account Control, I cannot apply a fix, and uninstalling the update only leads Windows to reinstall it.”

Another user reported, “Security update KB5043076 breaks UAC – Run as Administrator on my Enterprise W10 22H2, W11 22H2, and 23H2 devices: It prevents me from clicking ‘Run as administrator.’”

Additional problems associated with the Windows 11 KB5043076 update include:

• One user noted that the search feature significantly slows down after the update.
• Another user mentioned their laptop was unable to connect to the internet post-update, despite being connected to the router.

Another user revealed that after the cumulative update, applications failed to launch, and even a restart or shutdown didn’t resolve the issue. They had to forcibly shut down and utilize a system restore point for a temporary fix.

KB5043076 is a mandatory security patch that was released as part of the September 2024 Patch Tuesday for Windows. It is designed to be automatically applied to supported Windows 11 23H2 and 22H2 systems. What’s particularly noteworthy about this September 2024 Patch Tuesday release is the extensive range of improvements, including support for AMD Branch Prediction Optimization.

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