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VBS file to modify registry

Posted on 2008-10-31
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Last Modified: 2012-06-27
I am looking to create a simple .vbs file that will modify a registry key. I need it to have a prompt to change one key, and automatically change the other key.

The keys are
hkey_local_machine>software>microsoft>windows nt>winlogon>defaultusername
hkey_local_machine>software>microsoft>windows nt>winlogon>defaultdomainname

I need a simple prompt that will ask me for the defaultusername, and when I enter it, it will change the key with my value. And, I need it to always change the defaultdomainname to "MCPS".

I have never programmed, and I am not even sure if this is the correct way to do this. Thanks for your help!
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Question by:dougstech
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Accepted Solution

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Hubasan earned 125 total points
ID: 22850933
Here is the script you requested. Let me know if you have any questions.
Const HKEY_LOCAL_MACHINE = &H80000002
Const cTitle = "Change Registry Values"
strComputer = "."
Set oWS = CreateObject("wscript.shell")
Set oReg=GetObject("winmgmts:{impersonationLevel=impersonate}!\\" & _ 
    strComputer & "\root\default:StdRegProv")
 
 
sKeyPath = "SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon"
sValueName = "DefaultUserName"
sDomain = "DefaultDomainName"
sDomainValue = "MCPS"
Do
sValue = InputBox("Please type in the DefaultUserName registry value you want to use:", cTitle, "(Enter value)")
	If sValue = "" Then
		sRes = oWS.Popup("Sorry, you must enter the DefaultUserName reg value to continue." &_
		" Do you wish to try again?", ,cTitle,vbExclamation+vbYesNo)
			If sRes = vbNo Then
				oWS.Popup "User canceled, Exiting script!", , cTitle, vbInformation
				WScript.Quit
			End If
	End If
Loop Until sValue <> ""
 
oReg.SetStringValue HKEY_LOCAL_MACHINE,sKeyPath,sValueName,sValue
oReg.SetStringValue HKEY_LOCAL_MACHINE,sKeyPath,sDomain,sDomainValue
 
oReg.GetStringValue HKEY_LOCAL_MACHINE,sKeyPath,sValueName,sValue2
oReg.GetStringValue HKEY_LOCAL_MACHINE,sKeyPath,sDomain,sDomainValue2
 
If sValue <> sValue2 Or sDomainValue <> sDomainValue2 Then
	oWS.Popup "There was a problem in changing the registry values," &_
	" please check that you have enough rights to write to the HKLM of the registry", , cTitle, vbCritical
Else
	oWS.Popup "Registry values were changed successfuly!", , cTitle, vbInformation
End If

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Expert Comment

by:BrandonGalderisi
ID: 22851028
Although hubasan's code appears to be correct, I would HIGHLY advise you not do this.  Storing default domain/user/password information in the registry is a big security hole.  That means that booting the computer (by anyone) will log it in and then the user could navigate to that key to get the users's password.

I realize that you can't do this with vbs, but it's a better setup to use xp power toys to do your auto login as it won't store the PW in cleartext.

http://www.windowsreference.com/windows-xp/enable-autologon-in-windows-2000xp2003/
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Author Comment

by:dougstech
ID: 22853139
BrandonGalderisi

the script does NOT have a password to be stored in the registry. the user will still have to enter their password, but the username and domain would be filled in for them.
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Expert Comment

by:BrandonGalderisi
ID: 22853161
I BELIEVE... the defaultusername and defaultdomainname are only used for auto login when the autologin flag is set.  I believe that the defaultusername and defaultdomainname will still always display the last logged in user.  

But I could be wrong.
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Author Closing Comment

by:dougstech
ID: 31512064
Thank you so much! It worked perfectly! This saves me a TON of time in the registry! thanks again
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Expert Comment

by:Hubasan
ID: 22853351
you are welcome :-)
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