Change the default file format
- Open a Microsoft Access file if you don't have one open already.
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On the Tools menu, click Options, and then click the Advanced tab.
- Under Default File Format, click the Access file format you want.
A file in Access 2000 file format can be opened in Access 2000 or later. You can open a file in Access 2002 - 2003 format only in Access 2002 or later.