Code 800704B2 – An attempt was made to remember a device that had previously been remembered

Troubleshooting Code 800704B2 –
An attempt was made to remember a device that had previously been remembered

Introduction to Code error 800704B2

This error code, 800704B2 occurs when you try to map a network drive with a VBScript.  A wild guess, you are probably using WSH (Windows Script Host) methods called MapNetworkDrive and EnumNetworkDrives.

The Symptoms You Get with Error 800704B2

The probable scenario is that you are trying to enumerate network drives in a Windows logon script.  However, a Windows Script Host message box appears and the script does not map the drive as you expected.

The cause of ‘An attempt was made to remember a device that had previously been remembered’ is a limitation of the EnumNetworkDrives method.  The route cause is a bug whereby this method scans only for connections with a status of "CONNECTED".  Thus the solutions are cunning work-arounds to overcome this inbuilt limitation. 

The Solutions for Code 800704B2

One suggestion is to put a RemoveNetworkDrive statement immediately before my MapNetworkDrive method.  J.B. Reminded me that RemoveNetworkDrive takes two true parameters, so try:
RemoveNetworkDrive x, true, true.  See more on remove network drive here.

My second suggestion was actually sent in by RS – see here

Example Script of error 800704B2

‘ VBScript.
‘ By Guy Thomas

‘ Purpose of script to map a network drive to H:\

Dim oNet

Set oNet = CreateObject("Wscript.Network")

oNet.MapNetworkDrive "K:", "\\Alan\Lazer6"

Dim oNet

‘ Note Lazer6 exists

Set oNet = CreateObject("Wscript.Network")

oNet.MapNetworkDrive "H:", "\\ServerName\home"

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Example 2 of error 800704B2 by RS

Dim WshNetwork, Letter

Set WshNetwork = WScript.CreateObject("WScript.Network")

Letter = "X:"

‘ this triggers the bug if the drive "Letter" is not available (with a red "X" in My Computer):

WshNetwork.RemoveNetworkDrive Letter, True, True

‘ the workaround

Dim AllDrives, i, WshShell, Command

Set AllDrives = WshNetwork.EnumNetworkDrive()

For i = 0 To AllDrives.Count

If AllDrives.Item(i) = Left(Letter, 1) Then

Set WshShell = WScript.CreateObject("WScript.Shell")

Command = "net use " & Letter & " /delete /yes"

WshShell.Run(Command), 7, True ‘ minimised, wait until completion

Set WshShell = nothing

End If


Here is further discussion of the problem in Microsoft’s KB article about Error 800704B2.  [Kindly sent in by Oscar Fowler].

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