You want to know how to fix the lost PCAWallpaperAppDetect entry in Windows 11, here we leave you a complete guide that will help you.

Many users who upgraded their version of Windows 11 to Windows 11 24H2 reported receiving a RunDLL error: Error in C:WINDOWSSystem32PcaSvc.dll, Missing entry: PcaWallpaperAppDetect. If this is also your case, here we leave you the best article so you can solve it, so continue reading:

How to Fix Miss Entry PCAWallpaperAppDetect in Windows 11

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PCAWallpaperAppDetect RunDLL." This error is a known issue and appears to be a leftover task associated with the PowerToys application. 

Utilizing Task Scheduler:

Launch Task Scheduler: Utilize the Windows search bar to locate and launch "Task Scheduler." This application manages scheduled tasks within your operating system.

Navigate Task Hierarchy: Within Task Scheduler, systematically expand the following folders in the left-hand pane:

Task Scheduler Library
Application Experience
Identify the Task: Locate the task named "PcaWallpaperAppDetect" within the central pane.

Disable or Delete the Task: Right-click on the identified task, "PcaWallpaperAppDetect." You have two options:

Disable: Choose "Disable" to temporarily suspend the task. This prevents the error message from appearing but allows potential future re-activation.

Delete: Select "Delete" to permanently remove the task. This is the most conclusive solution, eliminating the error message entirely.


System Restart: Regardless of whether you disabled or deleted the task, it's recommended to restart your computer. This ensures the changes implemented within Task Scheduler take full effect.

Additional Considerations:

PowerToys Installation: The presence of this error might be linked to the PowerToys application. If you don't utilize PowerToys or no longer require it, consider uninstalling it to prevent future occurrences.

Alternative Solutions: While the Task Scheduler method is generally effective, alternative solutions might exist depending on your specific system configuration. If the error persists after following these steps, consulting online resources or seeking assistance from a qualified IT professional is recommended.

By following these outlined steps, you should be able to effectively resolve the "Missing Entry: PCAWallpaperAppDetect" error and eliminate the associated error message in your Windows 11 environment.

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