FileViewPro

Extension	File Type Developer	File Category	File Type Description	Software	Software Developer
.H1S	Microsoft Corporation	System Files	Windows Assistance Platform Help File	Microsoft Windows	Microsoft Corporation
.HDMP	Microsoft Corporation	System Files	Windows Heap Dump	Microsoft Windows	Microsoft Corporation
.HDS	Parallels	Disk Image Files	Parallels Desktop Hard Disk File	Microsoft Windows	Microsoft Corporation
.HIV	Microsoft Corporation	System Files	Windows Registry Hive File	Microsoft Windows	Microsoft Corporation
.HLP	Microsoft Corporation	System Files	Windows Help File	Microsoft Windows	Microsoft Corporation
.HSH	Microsoft Corporation	System Files	Windows Catalog Search Index File	Microsoft Windows	Microsoft Corporation
.HTT	Microsoft Corporation	System Files	Hypertext Template File	Microsoft Windows	Microsoft Corporation
.HTW	Microsoft Corporation	Data Files	IIS Webhits Template	Microsoft Windows	Microsoft Corporation
.HXA	Microsoft Corporation	Settings Files	Microsoft Help Attribute Definition	Microsoft Windows	Microsoft Corporation
.HXD	Microsoft Corporation	Data Files	Microsoft Help Validator Data File	Microsoft Windows	Microsoft Corporation
.HXF	Microsoft Corporation	Data Files	Microsoft Help 2 Project Include File	Microsoft Windows	Microsoft Corporation
.HXT	Microsoft Corporation	Data Files	Microsoft Help 2 Table Of Contents File	Microsoft Windows	Microsoft Corporation
.HXW	Microsoft Corporation	Settings Files	Microsoft Help Attribute Definition	Microsoft Windows	Microsoft Corporation
.H_	Microsoft Corporation	Backup Files	Microsoft Windows WinHelp Compressed Data	Microsoft Windows	Microsoft Corporation

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Compatible with Windows 11, 10, 8, 7, Vista, XP and 2000