Instead of using the command line to access your .mdb using the workgroup source file, I actually go to the folder where the new workgroup file is located and replace it with my own. The path to the new workgroup file is C:\users\user\AppData\Roaming\Microsoft\Access . There are 3 .mdw files inside this folder, and I found that system3.mdw works when I open Access 2010. Thus, I replace this file with my own workgroup file (of course, you have to make a copy of the original system3.mdw before you replace with yours). Now that I have launched my .mdb , a username / password dialog will appear.
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