Server Error in '/<folder>' ... ERROR
[HY000] [ODBC Microsoft Access Driver]General error
When trying to run a .NET web-application that connects to a
database, the following error is generated in the browser:
Server Error in '/<folder>' Application
ERROR [HY000] [Microsoft][ODBC Microsoft Access Driver]General
error Unable to open registry key 'Temporary (volatile) Jet DSN
for process ...
The error is generated on the line that attempts to open the
database connection to an MS-Access database.
Possible Causes and Remedies
- The database may be missing.
- Check that the database exists.
- Check that the name and path of the database are
- If in doubt, specify the full path to the database
- The account in which the ASP.NET process is running may not
have permission to read (i.e. open) the database file.
- Grant the local ASPNET account full
access to the MS-Access database file. (You can do
this by right clicking the file within Windows
explorer, selecting properties and then granting the
ASPNET process full control.)
- On some systems you may need to
grant access to IIS_WPG or NETWORK_SERVICE accounts
depending on which account the service is actually
These notes have been tested within Microsoft
Visual Studio .NET 2003 running under Windows XP, and may apply to
other versions as well.
About the author: Brian Cryer
is a dedicated software developer and webmaster. For his day job he develops websites and desktop applications as well as providing IT services. He moonlights as a technical author and consultant.