Notes about the SQM 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 SQM file type is primarily associated with 'Windows Live' by Microsoft Corporation. These files are typically hidden and written to the root directory of the drive. FILExt understands that the location the files are written may change in the future. Some other Microsoft products may drop these files as well. Reportedly you can turn the writing of sqmdata.sqm and sqmnoopt.sqm files off by going to Help, Customer Experience Improvement Program in Messenger and then turning them off from there.
Detailed information for file extension SQM:
Hex: 4D 53 51 4D 78 , ASCII: MSQMx
Other applications associated with file type SQM:
'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.