On September 10, Microsoft shipped Patch Tuesday updates for all supported versions of Windows 10, including the May 2019 Update (version 1903). The update comes with a number of security fixes and quality improvements, but it also breaks Windows Search and even audio on some PCs.
The last optional update Windows 10 version 1903 had a couple of issues hitting Cortana (SearchUI.exe) to Windows Search. Fortunately, the high CPU has been fixed in the Build 18362.356 (KB4515384) and it has been shipped to everyone. However, some PCs with Windows 10 KB4515384 suffers from an annoying audio bug and as well as a load of other problems.
According to numerous posts (1, 2, 3), users are reporting that the cumulative update breaks down audio or reduces the volume when playing media contents such as games. Uninstalling the update apparently restores the expected behaviour.
“Something has gone totally wrong after September 10 update. The sound from my $2,000 PC setup has literally stopped coming. And it’s impossible to play games without the freaking sound. I have tried reinstalling the audio drivers, but it didn’t work. Guess I will have to remove this update,” one of our readers wrote in the comments section.
How to fix audio issues after installing Windows 10 KB4515384
As mentioned, one way to resolve this issue is to uninstall this patch but remember that the same update includes important security fixes.
- Open Start menu and navigate to Settings.
- Click on Update & Security and navigate to Windows Update page.
- Click on View update history > Uninstall updates, and choose the update. In this case, you have to select KB4515384.
- Click on Yes when asked and restart your device.
In related news, Windows 10 Build 18362.356 also breaks the Start menu and Search on the desktop for a number of users. Microsoft says they are investigating the issue and a fix will be included in the upcoming release.