Error 80004005 The Microsoft Jet Database Engine Cannot Open the File

Following are the possible causes of this error:

  1. This error usually occurs when database file or folder that contains the file does not have IUSR Windows NT permission. i.e. you have uploaded database file other than site's db folder. Please move or upload your database file into db folder.
  2. Another process or user has the Access database open.
  3. Use absolute path in database connection string such as C:\domains\yourdomain\db\database-file-name.

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