Hold down the while clicking Restart in the Windows Power menu.
This file is a Dynamic Link Library (DLL) that acts as a bridge between software and the Windows operating system. Specifically, the "ext-ms-win" prefix indicates it belongs to an extension set of Windows APIs. It is often associated with system setup, user account creation, and initial configuration tasks. Common Causes of the Error ext-ms-win-oobe-query-l1-1-0.dll missing
Sudden power loss or system crashes can damage core operating system data. Hold down the while clicking Restart in the
Visit the official Microsoft Visual C++ Supported Downloads page. It is often associated with system setup, user
Navigate to (or Update & Security on older builds). Click the Check for updates button.
If the error only triggers when launching a specific app, the program installer is likely broken: Press Win + R , type appwiz.cpl , and hit . Locate the problematic application. Right-click and choose Uninstall .