Reference]80004005—logon failed() – Adobe Dreamweaver CC 2015 User Manual
Page 563
556
Dynamic sites, pages and web forms
Last updated 6/3/2015
If you use Microsoft Access, the database file (.mdb) might be locked. The lock might be due to a DSN with a different
name accessing the database. In Windows Explorer, search for the lock file (.ldb) in the folder containing the database
file (.mdb) and delete the .ldb file. If another DSN is pointing to the same database file, delete the DSN to prevent the
error in the future. Reboot the computer after making any changes.
[Reference]80004005—Couldn’t use ‘(unknown)’; file already in use]
This error occurs when you use a Microsoft Access database and attempt to view a dynamic page in a web browser or
in Live view. Another variation of this error message is “80004005—Microsoft Jet database engine cannot open the file
(unknown).”
The probable cause is a permissions problem. Here are some specific causes and solutions:
• The account being used by Internet Information Server (usually IUSR) might not have the correct Windows
permissions for a file-based database or for the folder containing the file. Check the permissions on the IIS account
(IUSR) in the user manager.
• You might not have permission to create or destroy temporary files. Check the permissions on the file and the folder.
Make sure that you have permission to create or destroy any temporary files. Temporary files are usually created in
the same folder as the database, but the file may also be created in other folders such as /Winnt.
• In Windows 2000, the time-out value may need to be changed for the Access database DSN. To change the time-out
value, select Start > Settings > Control Panel > Administrative Tools > Data Sources (ODBC). Click the System tab,
highlight the correct DSN, and click the Configure button. Click the Options button and change the Page Timeout
value to 5000.
If you still have problems, see the following Microsoft Knowledge Base articles:
• PRB: 80004005 “Couldn't Use ‘(unknown)’; File Already in Use” at
.
• PRB: Microsoft Access Database Connectivity Fails in Active Server Pages at
.
• PRB: Error “Cannot Open File Unknown” Using Access at
.
[Reference]80004005—Logon Failed()]
This error occurs when you use Microsoft SQL Server and attempt to view a dynamic page in a web browser or in Live
view.
This error is generated by SQL Server if it doesn’t accept or recognize the logon account or password being submitted
(if you’re using standard security), or if a Windows account does not map to a SQL account (if you’re using integrated
security).
Here are possible solutions:
• If you use standard security, the account name and password might be incorrect. Try the system Admin account and
password (UID= “sa” and no password), which must be defined in the connection string line. (DSNs do not store
user names and passwords.)
• If you use integrated security, check the Windows account calling the page and find its mapped SQL account (if any).
• SQL Server does not allow an underscore in SQL account names. If someone manually maps the Windows
IUSR_machinename account to a SQL account of the same name, it will fail. Map any account that uses an
underscore to an account name on SQL that does not use an underscore.