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:
Hex: 48 4D 54 64 , ASCII: HMTd
Program ID: HighMAT.Viewer
'Identifying characters' used on FILExt.com are
provided by Marco Pontello from his TrID database
To change file associations press Windows Key
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.