_AD_SetPassword
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Sets a user's password, or clears it if no password is passed to the function.
#Include <AD.au3>
_AD_SetPassword($sAD_User[, $sAD_Password=""[, $iAD_Expired = 0]])
Success: 1
Failure: 0, sets @error to:
1 - $sAD_User does not exist
x - Error returned by SetInfo function (Missing permission etc.)