Microsoft KB Archive/306441

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Article ID: 306441

Article Last Modified on 8/11/2006



APPLIES TO

  • Microsoft Active Server Pages 4.0
  • Microsoft Data Access Components 1.5
  • Microsoft Data Access Components 2.0
  • Microsoft Data Access Components 2.1
  • Microsoft Data Access Components 2.1 Service Pack 1
  • Microsoft Data Access Components 2.1 Service Pack 2
  • Microsoft Data Access Components 2.5
  • Microsoft Data Access Components 2.5 Service Pack 1
  • Microsoft Data Access Components 2.5 Service Pack 2
  • Microsoft Data Access Components 2.6



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"



Additional query words: 80004005

Keywords: kbprb KB306441