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

Did use a connection string to connect with your database?

no connection string

Here is what I am using:

Private Sub RunPickAccessMacro(ByVal sMacro As String)
        Dim oAccess As Object
        Try
            oAccess = CreateObject("Access.Application")
            oAccess.OpenCurrentDatabase("\\mwwnas1\mwwnas1f\mis\Projects_Prod\PickTick\pickticket97_test.mdb;)"
            oAccess.DoCmd.RunMAcro(sMacro)
            oAccess.Visible = False
        Catch e As Exception

            sErrNo = Err.Number.ToString
            sError = "RunPickAccessMacro " & vbCrLf & Err.Description & " " & "ErrNo: " & sErrNo
            dispError(sError)
        Finally

            oAccess = Nothing
        End Try
    End Sub

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"Yes you can open/read/write to an acces db when it is opened by another user (access is a multiuser DB),  However you can NOT when it is opened exclusively by another user...you may also want to make sure that you have access permission to that remote directory!"
just take a look
http://social.msdn.microsoft.com/forums/en-US/adodotnetdataproviders/thread/31f75deb-ed3f-40e8-8084-ce51343b05cf

Dim sDBPassword as String        
Dim oDBEngine As DAO.DBEngine
Dim oDB As DAO.Database
        
sDBPassword = "Mypassword" 'database password 
oDBEngine = oAccess.DBEngine
oDB = oDBEngine.OpenDatabase(Name:=sDBPath, _
   Options:=False, _
   ReadOnly:=False, _
   Connect:=";PWD=" & sDBPassword)
oAccess.OpenCurrentDatabase(filepath:=sDBPath, _
   Exclusive:=False)
oDB.Close()
System.Runtime.InteropServices.Marshal.ReleaseComObject(oDB)
oDB = Nothing
System.Runtime.InteropServices.Marshal.ReleaseComObject(oDBEngine)
oDBEngine = Nothing

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I am getting: Microsoft Office Access can't find the procedure 'ExportSelectedToDBF.' ErrNo: 2517

I tried to convert the macro to a module and I get message I do not have exclusive rights to the database.

Private Sub Button8_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button8.Click
        Dim oAccess As Access.ApplicationClass
        Dim sMacro As String

        sMacro = "ExportSelectedToDBF"

        Try
            'Start Access and open the database.
            oAccess = CreateObject("Access.Application")
            oAccess.Visible = True
            oAccess.OpenCurrentDatabase("\\mwwnas1\mwwnas1f\mis\Projects_Prod\PickTick\pickticket97_test.mdb", False)

            'Run the macros.
            oAccess.Run(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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press Ctrl Alt del just to see if MSACCESS.EXE is already running...
Close anything that has relation with access...
maybe your access programm is already open...and you do not have exlusive access

I have checked many times to see if access is running when I get this.  ctrl alt del ... ctrl alt del.

I made a copy of the the mdb and tried modifying the macro again.  There was no lock on it and it let me modify the macro.  As soon as I run it, the lock icon appears beside the mdb name in explorer.  It's like the server puts a lock on it or something.

try directly to use this in a button click
Dim oAccess As New Access.Application 'Access.Application
        oAccess.OpenCurrentDatabase ("\\mwwnas1\mwwnas1f\mis\Projects_Prod\PickTick\pickticket97_test.mdb", False)
        oAccess.DoCmd.RunMacro ("YOurMAcro name")
   

I changed the default open mode to open Exclusive.  It has worked several times in a row now, with both the original db and the copy I made.

Maybe just coincidence.  I have tried that before, changing it back and forth and it didn't help.  Maybe your code made the difference.

I am going to test some more..

you try also this code applied in https://www.experts-exchange.com/questions/20956660/VB-Net-Run-Access-Macro.html

Private Sub RunMacro(ByVal sMacro As String)
        Dim oAccess As Object

        oAccess = CreateObject("Access.Application")
        ' Open the database
        oAccess.OpenCurrentDatabase(fsDBName)
        Try
            oAccess.DoCmd.RunMAcro(sMacro)
            oAccess.DoCmd.Maximize()
            oAccess.Visible = True
        Catch e As Exception
            MsgBox("Macro is cancelled or does not exist")
        Finally
            oAccess = Nothing
        End Try
    End Sub

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I get the original error with that code.  That was where I started.

It seems to be working now.  But I was mistaken ... it is still showing a lock on the origial mdb in explorer, but not the copy and it will not let me modify my macro.  Do you know why that is?

i know just that the error ...
and tha t you may have exlusive access...if the application is open exclusivelly you have read only access.
just check the path ..and adjust the code...
it is working on me perfect...

did you try
oAccess.Run ("sMacro)
istead of oAccess.DoCmd.RunMacro

They both work.  The code below is working.  I'm just trying to figure out why the lock is there and I can't change the macro.  I converted the macro to a module on the copy of the mdb and it works either way I call it.

The copy of the mdb that I made does not have the lock icon by it in explorer.  The original does.  I cannot change the macro or create a module on the original mde or change it to open in shared mode.

Dim oAccess As Access.ApplicationClass
        Dim sMacro As String

        sMacro = "ExportSelectedToDBF"

        Try
            'Start Access and open the database.
            oAccess = CreateObject("Access.Application")
            oAccess.Visible = True
            oAccess.OpenCurrentDatabase("\\mwwnas1\mwwnas1f\mis\Projects_Prod\PickTick\pickticket97_test.mdb", False)

            'Run the macros.
            'oAccess.Run(sMacro)

            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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