The ext-ms-win-oobe-query-l1-1-0.dll file contains functions that allow Windows to query and interact with the OOBE component. It's a system file, and its absence or corruption can lead to errors and instability in the operating system.
2. Use the Deployment Image Servicing and Management (DISM) Tool ext-ms-win-oobe-query-l1-1-0.dll missing