Microsoft says KB5120998 Windows update resets desktop settings
Summary
Microsoft has confirmed that the KB5120998 August 2026 preview update for Windows is causing desktop settings to be lost or reset on some devices. This issue affects users who install this specific update.
IFF Assessment
FOE
This update negatively impacts user experience by resetting configurations, which could indirectly lead to security misconfigurations or increased user frustration and error.
Defender Context
While not a direct security vulnerability, unexpected changes to system settings after an update can be a precursor to more significant issues. Defenders should monitor for related security implications and be prepared to assist users with reconfigurations if necessary. This also highlights the importance of robust testing and rollback procedures for software updates.