Some Windows users reported that some apps on their computers dont use the dark mode, including theTask Manager.
This article shares three methods for you to fix the Task Manager dark mode not working problem.
Step 1: TypeCommand Promptinto the Windows search bar.

Step 2: Right-tap on the best-matched result and chooseRun as administrator.
Step 3: Typesfc /scannowand hitEnterto execute this command line.
When the process ends, you could see if Task Manager applies the dark mode.

This problem is fixed by Microsoft.
Step 1: PressWin + Ito open Windows configs.
Step 2: Go to theWindows Updatesection and clickCheck for updates.

Step 3: Wait for the detecting process.
you’re able to go toAdvanced optionsand installoptional updates.
After all these steps, reset your setup to fully apply the updates.
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This post teaches how to check Windows 11 version, build number, edition in 5 ways.
Find if you have latest version of Windows 11 and get the latest version.
you might work with the following steps.

Step 1: PressWin + Ito bring up the controls window.
Step 2: Navigate toPersonalization>Colors.
Step 3: ChooseDarkfrom the menu ofChoose your mode.
Step 1: Open Windows tweaks.
Step 2: ChooseEase of Access>High contrast.
Step 3: On the right pane, you should probably toggle the switch ofTurn on high contrasttoOn.
Wait for the computer to apply the change.
you’re free to initiate the Task Manager now.