Notes about the XMIT 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 XMIT file type is primarily associated with 'XMIT File Format' by IBM. The XMIT (short for TRANSMIT) command comes with all MVS systems that have TSO/E (Time Sharing Option) which is basically all MVS systems since the mid-1980s (including OS/390). The IBM HELP command for this is: "The TSO/E Interactive Data Transmission Facility TRANSMIT command allows you to send data sets or messages to persons on other MVS systems via Network Job Entry or directly to persons on your own system. You may transmit sequential and partitioned data sets that have the fixed, variable and undefined record formats."
Detailed information for file extension XMIT:
Primary association: XMIT File FormatIdentifying characters
Hex [Position 3]: C9 D5 D4 D9 F0 F1
'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.