File Type Generic IconMicrosoft Help Merged Query Index File
File Format Proprietary (Microsoft)
Usage Referenced by an application; not meant to be opened manually
Rank ★ ☆ ☆  Uncommon

An H1Q file is an index used by Microsoft Help. It is accessed when users run searches within the Windows Help system.

Microsoft Help is a system assistance program included with Windows. It allows users to browse and search help topics related to Windows and other programs.

Open With

IconMicrosoft Help

Updated July 29, 2009