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Microsoft Office Access can't open the database because it is missing, or opened exclusively by another user

Posted on 2010-08-17
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Last Modified: 2013-11-27
I get this error when I try to open an access database and run a macro from vb.net: "Microsoft Office Access can't open the database because it is missing, or opened exclusively by another user."

I have searched high and low for a solution.  It went away for a few times, now it is back and I have no idea why.  My research tells me it might be a security issue on the server, though I get the error whether I run it on a local datbase or a network database.  Any ideas?
RunPickAccessMacro ("test")
Private Sub RunPickAccessMacro(ByVal sMacro As String)
        Dim oAccess As Access.ApplicationClass
        Try
            oAccess = CreateObject("Access.Application")
            oAccess.Visible = True
            oAccess.UserControl = True
            oAccess.AutomationSecurity = 1
            'oAccess.OpenCurrentDatabase("\\mwwnas1\mwwnas1f\mis\Projects_Prod\PickTick\pickticket97_test2.mdb;", False, False)
            oAccess.OpenCurrentDatabase("c:\test.mdb;", False, False)
            oAccess.DoCmd.RunMacro(sMacro)

            'Clean-up: Quit Access without saving changes to the database.
            oAccess.DoCmd().Quit(Access.AcQuitOption.acQuitSaveNone)
            System.Runtime.InteropServices.Marshal.ReleaseComObject(oAccess)
            oAccess = Nothing


        Catch ex As Exception
            sErrNo = Err.Number.ToString
            sError = "**Macro" & vbCrLf & Err.Description & " " & "ErrNo: " & sErrNo
            dispError(sError)
        End Try
    End Sub

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Question by:Delta7428
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uscshaggy earned 1200 total points
ID: 33456209
I would suggest downloading Process Explorer from MS/sysinternals, http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx which you can use to see which process(es) have a handle open for a particular file.  When you encounter this error again, run ProcessExplorer.exe and use Ctrl+F to search for your database name (test.mdb). It should find the process that is currently accessing the file.  I would guess it is an AV product, but this will show you for sure.  

Once you identify the process that is has the file open, shut that other process down, or put in exclusions for your database if it is an AV or HIPS product.
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by:rbgCODE
rbgCODE earned 800 total points
ID: 33458139
Have you tried opening the database passively instead of with strict permissions?  
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Author Comment

by:Delta7428
ID: 33458164
yes, I added permissions hoping it might help.
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