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PRB: Troubleshooting Error 80004005 "Couldn't Lock File" in ASP

This article was previously published under Q306441
SYMPTOMS
When you use ActiveX Data Objects (ADO) and ODBC to try to connect to a Microsoft Access database, you may receive the following error message:
Microsoft OLE DB Provider for ODBC Drivers error '80004005'
[Microsoft][ODBC Microsoft Access 97 Driver] Couldn't lock file.
CAUSE
This error message occurs because you do not have the correct permissions to create the lock file (.ldb) for a Microsoft Access database. By default, a lock file is created in the same folder as the Microsoft Access .mdb file.
RESOLUTION
To resolve this problem, follow these steps:
  1. Grant the user who is accessing the database (usually the IUSR_<computername> account) full control to the share or folder.
  2. Sometimes permissions are restricted on the share because the file is intended to be read-only. You may want to try to change the connection mode, which the following code demonstrates:
       Set Conn = Server.CreateObject("ADODB.Connection")   Conn.Mode = adModeShareDenyWrite    '8       'From Adovbs.inc   '---- ConnectModeEnum Values ----   'Const adModeUnknown = 0   'Const adModeRead = 1   'Const adModeWrite = 2   'Const adModeReadWrite = 3   'Const adModeShareDenyRead = 4   'Const adModeShareDenyWrite = 8   'Const adModeShareExclusive = &Hc   'Const adModeShareDenyNone = &H10					
STATUS
This behavior is by design.
REFERENCES
For additional information, click the article numbers below to view the articles in the Microsoft Knowledge Base:
174943 PRB: 80004005 "Couldn't Use '(unknown)'; File Already in Use"
80004005
Properties

Article ID: 306441 - Last Review: 08/11/2006 07:42:32 - Revision: 4.1

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  • Microsoft Data Access Components 2.5
  • Microsoft Data Access Components 2.5 Service Pack 1
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  • Microsoft Data Access Components 2.6
  • kbprb KB306441
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