Forum Discussion
Taskbar goes dark black intermittently
I am observing this bug with multiple screens and the crazy thing is that it affects the screen that is marked as "make this my main monitor". The taskbar on the other screens remain readable with high contrast but on the "main monitor" it gets dark and hard to identify anything. If I then click on the taskbar it gets focus and bright as normal - as soon as I switch back to some window it gets dark and unreadable again. It would be more logically the other way around. As a workaround I selected my Laptop display as main monitor that I am hardly using but this bug is a little crazy.
As a first step, could you please try the following to temporarily regain access to your desktop?
- Press Ctrl + Alt + Delete.
- Select Task Manager.
- Click Run new task.
- Enter explorer.exe and click OK.
This may reload the Windows desktop and allow you to continue working in the meantime.
Potential Cause: Windows Update KB5129195
The cumulative security update KB5129195, released on September 14, 2026, may be causing this issue, particularly on PCs with FSLogix installed.
How to Uninstall the Update via Windows Settings
Open Windows Update
- Press Windows + I to open Settings.
- Select Windows Update, then click Update history.
Uninstall updates
- Scroll down to Related settings.
- Click Uninstall updates.
Locate KB5129195
- Look for KB5129195 in the list.
- If it is listed, click Uninstall next to it and confirm your selection.
Restart the computer and check whether the issue has been resolved.
Please try the temporary workaround first. If the desktop loads successfully, you can then proceed with the update removal if necessary.
I hope this helps you.