Windows 11 update sends some desktops into an unwanted goth phase
Microsoft has confirmed that its August 2026 update preview for Windows 11 is causing some desktops to lose their personalisation settings, forcing affected machines onto a default black background that users cannot manually override. The bug affects Windows 11 24H2 and 25H2, and matters because it strips users of a basic customisation option with no available workaround, leaving them stuck until Microsoft ships a proper fix.
According to Microsoft's Windows release health dashboard, the issue prevents personalisation settings from loading correctly regardless of what values are stored, so the system falls back to black rather than honouring any user preference. Other desktop settings, such as slideshow options or contrast themes, may also be affected. Microsoft says it is working on a resolution for a future Windows update, but has not given a timeframe.
In short
- August Windows 11 update breaks personalisation, forcing black backgrounds.
- Affects Windows 11 24H2 and 25H2; manual fixes don't work.
- Microsoft says a fix is coming in a future update.
Explained simply
Windows 11 is Microsoft’s operating system for personal computers. It lets people change how their desktop looks, including choosing a background image or colour; these choices are part of the system’s personalisation settings.
Microsoft issues updates to fix problems and add changes, and preview updates let some users receive changes before a wider release. The August 2026 preview affects versions 24H2 and 25H2, which are names for Windows 11 releases.
The issue matters because affected computers may ignore saved personalisation choices and show a black background, with some other desktop options also potentially affected. Microsoft says it is working on a fix for a future update, but has not said when it will arrive.
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