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Unrecognized database format . (Error 3343)

office 365 dev account|Last Updated: 6/12/2017
1 Contributor

Applies to: Access 2013 | Access 2016

Possible causes:

  • The specified file name is not a Microsoft Access database engine database.

  • The specified file name is a device name, for example, a printer or a console.

  • The database file has invalid header information or an unknown sort order.

  • A commit is pending from another user but the lock file cannot be found.

  • During a commit, you are attempting to write a Long value larger than the 2K maximum page size.

  • The database is damaged. Compact the database and then try opening it again.

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