I have a problem with a script file not disconnecting and connecting drives

I'm not sure if you're getting an error or not when running the script. Honestly though, I don't see any problems with your method but i'm guessing the issue might be FileSystemObject not detecting the drive, therefore not disconnecting it and in turn the MapNetworkDrive is not doing anything.

You can give this a shot. Basically I just got rid of the excess object declares, added error handling and removed checking for drive existence via FileSystemObject, so that you're only using a single object that you can blame if there is a failure.

On Error Resume Next
Set objNetwork = WScript.CreateObject("WScript.Network")

objNetwork.RemoveNetworkDrive "I:", True, True
objNetwork.MapNetworkDrive "I:", "\\wgh-maindc\install", false

same issue.  If I step through it it works fine.  If I take the breaks out it doesn't work.  It is almost like it doesn't see any of the lines.

How are you running this anyways? VBS file, in a VB project, etc...

I am running this as a VB script file for user logons.  I am not gettting any error messages when I run this.  I have never quite seen anything like this before.  I am at a total loss.  I removed the extra lines as suggested in the first response and tooks out the if statement, but it still won't work if I just run it.  If I set the breaks and run it by stepping through those lines it disconects the old drives and maps the new drive.  Take the breaks out and run it and it acts like it doesn't see those lines at all.

Option Explicit
'
Dim strDriveLetter1, strRemotePath1, strDriveLetter2, strRemotePath2, strPrint1, strPrint2, strPrint3, strOldPrint1, strOldPrint2, strOldPrint3
Dim strDriveLetter3, strRemotePath3, strDriveLetter4, strRemotePath4, strDriveLetter5, strRemotePath5
Dim strDriveLetter6, strRemotePath6
Dim objNetwork, objShell, objFSO
Dim CheckDrive, AlreadyConnected, intCounter
Dim MultiPrinter, UNCpath1, UNCpath2, UNCpath3

'On Error Resume Next

Set objNetwork = WScript.CreateObject("WScript.Network")
Set objFSO = WScript.CreateObject("Scripting.FileSystemObject")
Set objShell = CreateObject("WScript.Shell")
Set objNetwork = CreateObject("WScript.Network")
Set CheckDrive = objNetwork.EnumNetworkDrives()
Set MultiPrinter = CreateObject("WScript.Network")

'If objFSO.DriveExists("I:") Then
objNetwork.RemoveNetworkDrive "I:", True, True
'End If
objNetwork.MapNetworkDrive "I:", "\\wgh-maindc\install", false

If objFSO.DriveExists("I:") Then
objNetwork.RemoveNetworkDrive "I:", False, True
End If
objNetwork.MapNetworkDrive "I:", "\\wgh-maindc\install", false

Finally, it works.