When you create a new database, Microsoft Office Access automatically saves the database to the default folder on your computer's hard disk. You can either select a different location when you save a new database or choose a new default folder location in which all new databases are automatically saved.
Change the default folder
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Click File > Options.
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Click the General category.
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Under Creating Databases, either type the new folder location in the Default database folder box, or click Browse to choose a new folder location.