Windows Forms Application Icon suddenly shows as default icon or does not update color after KB5051989 update

https://windowsbb.com/topic/580018-windows-forms-application-icon-suddenly-shows-as-default-icon-or-does-not-update-color-after-kb5051989-update/

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Windows 11

Posted March 6

Hi,Our C# Windows Forms Application icon (in the taskbar) suddenly shows as default icon or sometimes doesn't update its color (based on the customization) after installing the K8SOS1989 update. This has been working for 15 years, and the issue just appeared after the said update. Removing the update will make it work as usual. We have a VM that only have the K8SOS1979 update and there, the problem doesn't show up. The issue was also experienced by our clients, and we can also see this internally. Even after clearing the icon cache and rebuilding it, the problem still occurs. Is there somethi

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