Solution to PcaWallpaperAppDetect error encountered after Win11 24H2 upgrade

Windows 11 24H2 preview version troubles: PcaWallpaperAppDetect error alarm php editor Youzi learned that some users who upgraded to the Windows 11 24H2 preview version encountered an annoying problem, that is, the system frequently pops up PcaWallpaperAppDetect error prompts. Although some speculate that PowerToys software may be the culprit, users who do not have PowerToys installed have also experienced this issue. To eliminate this error, simply delete the PcaWallpaperAppDetect task. This action will not negatively affect any important functionality. For a detailed explanation of the issue and steps to resolve it, please continue reading this article to learn more.

The PHP Chinese website attached the error message as follows:

Error in C:WINDOWSsystem32PcaSvc.dll

Missing entry: PcaWallpaperAppDetect

On the Microsoft support forum, many users who upgraded to Windows 11 24H2 reported encountering this problem:

Error in C:WINDOWSsystem32PcaSvc.dll

Missing entry: PcaWallpaperAppDetect

Error in C:WINDOWSsystem32PcaSvc.dll

Missing entry: PcaWallpaperAppDetect

Error in C:WINDOWSsystem32PcaSvc.dll

Missing entry: PcaWallpaperAppDetect

According to Windows Insider Dypsis, the error is triggered by the PcaWallpaperAppDetect task in the task scheduler, and deleting the task will fix the error.

PcaWallpaperAppDetect task can be found in the following path:

Task Scheduler LibraryMicrosoftWindowsApplication Experience

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