Unrecognized database format <filename>. (Error 3343)

  • Article

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.