File Extension HMT

.HMT File

File extension: HMT
File type: HighMAT


Notes about the HMT file extension:



To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened" (Windows 7) or "How do you want to open this file?" (Windows 10) if you double-click the file. There click on "More apps" and choose a suitable software to view such files on your PC or from email attachments.

The HMT file type is primarily associated with 'HighMAT' by Microsoft Corporation. HighMAT is a way for media formats like JPG, MP3, WMA, WMV and MPEG-4 to be organized and published on a CD. DVD support is planned. [Added June 2007: Microsoft has discontinued development on the HighMAT technology. Therefore, the HighMAT extension to the Microsoft Windows XP CD Writing Wizard is no longer offered by using Windows Update.]

Detailed information for file extension HMT:


Primary association: HighMAT
Company: Microsoft Corporation
Identifying characters Hex: 48 4D 54 64 , ASCII: HMTd
Program ID: HighMAT.Viewer
Related links: HighMAT Wikipedia Entry, Update for HighMAT Support in Windows
File Identifier - TrID
'Identifying characters' used on FILExt.com are
provided by Marco Pontello from his TrID database




To change file associations press Windows Key + X and then Apps and Features > Default apps > Choose default apps by file type. Invalid file associations could be the result of underlying issues within your Windows PC.

Technical data

To view technical data on file-extension HMT click this link to expand/hide the additional area.

System Info for File Extension .HMT

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and information FILExt collected directly from user systems.

ProgramID: HighMAT.Viewer, FileType: HighMAT Accelerator File, AppName: HighMAT Viewer
EXEFile: HMTView.exe


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