What is the File Extension M4D?
M4D files are data files used by the Sage MAS 90 and MAS 200 software suite to store accounting, database and payroll information. Sage MAS 90 is written and distributed by Sage Group PLC.
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Identification
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M4D files have the characters "M4D" after the dot following the name of the file. It appears as "filename.M4D" where "filename" is a user-defined file name and M4D is the extensioin.
Location
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M4D files are most likely in the "Program Files" in the "Sage Group" or similarly named folder. M4D files may also be found in the in the "My Documents" folder or in other user-defined folders.
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Program
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The MAS 90 software suite provides solutions for business tasks. These solutions include accounting, management, company processes, project management and e-commerce.
Warning
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Since M4D files can contain important and confidential company data, these files should be backed up every day. Deleting M4D files will cause data loss and liability issues for the company.
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