To open an AccountEdge company file on a PC, you should change the file Some AccountEdge company files don't have a file extension (the part after the "dot" in a filename, for example Myfile.MYO). When company files are created in AccountEdge they don't usually have a file extension, but Windows files will always have file extensions. Later software versions have an .MYO extension. Earlier versions of BusinessBasics, Accounting, and Accounting Plus company files will have a .DAT extension and earlier version Premier company files will have a .PRM extension.It is not mandatory to change the file extension to open the file; it can be opened without changing the extension. To open the file without changing the file extension you will need to change So to see these files on a Windows PC you'll need to change the file type in the open Open screen to All Files. 
Since Mac company files don't have a file extension it is quite easy to open Windows created company files on a Macintosh. When opening the Windows company file on a Macintosh you need to select When opening files on a Mac, select View all Files to be able to select the Windows file. 
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