File Extension 12M

.12M File

File extension: 12M
File type: Smartmaster File


Notes about the 12M file extension:



Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.

The 12M file type is primarily associated with '1-2-3' by IBM. This was a Lotus product. Lotus was bought out by IBM.

Detailed information for file extension 12M:


Primary association: 1-2-3
Company: IBM



Important: Invalid file associations could be the result of underlying issues within your Windows PC. It is highly recommended that you scan your PC for invalid registry entries, unused processes and other slowdown issues.

Technical data

To view technical data on file-extension 12M click this link to expand/hide the additional area.

System Info for File Extension .12M

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: Lotus123.SmartMaster.98
EXEFile: C:\lotus\123\123w.exe %1

ProgramID: Lotus123.SmartMaster.97
EXEFile: %ProgramFiles%\lotus\123\123w.exe %1

ProgramID: Lotus123.SmartMaster.97
EXEFile: c:\lotus\123\123w.exe


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