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How to Open a QBX File
Things You'll Need
Launch QuickBooks and click File.
Select Accountant's Copy and click "Convert Accountant's Copy to Company File." In older versions of QuickBooks you may need to select Utilities instead.
Navigate to the folder that contains your .qbx file, select that file and click "Open."
Name the new .qbw file that you will create from your .qbx file and click "Save." You can open the new file as you would any .qbw file.