Unable to open registry key 'temporary (Volatile) Jet DSN for Process X Thread X DBC 0x21A4004 JET'
http://www.aspfaq.com/show.asp?id=2009
1, the correct database connection string
2, check Access version,> = 2000
3. Set up user permissions, pay attention to IUSR_ * The directory where the database is located and the permissions of the Windows / Temp directory. To have write permissions