Registry Edit From Batch

Question

I would like to change the registry path's value from 0 to 1:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\Background\OEMBackground

Is there any possible way of doing this within a batch file using the "reg" command? You can grab the syntax here. I searched it, but can not find a way to modify it. Any help would be greatly appreciated. Thanks!

Answer 1

I would stay away from reg.exe, it can be blocked by a policy. I suggest to use wmic.exe. In your case it should works like this:

setlocal
:: $KEY broken for better readability
set "$KEY=SOFTWARE\Microsoft\Windows\CurrentVersion"
set "$KEY=%$KEY%\Authentication\LogonUI\Background"
set "$VALNAME=OEMBackground"
set "VAL=1"
set "HIVE=&H80000001"                 &:: "&H80000001 = HKEY_LOCAL_MACHINE"
wmic.exe /NAMESPACE:\\root\default Class StdRegProv Call^
    SetDWORDValue^
    hDefKey="%HIVE%"^
    sSubKeyName="%$KEY%"^
    sValueName="%$VALNAME%"^
    uValue="%VAL%"^
    && echo Success.||echo failed.
endlocal

To select another registry-hive, the value of hDefKey must be changed accordingt to this MSDN-Article. Other Methods for different value types which can be used instead of SetDWORDValue can be found there as well.