LuxuryQ

Thanks a lot. I appreciate your kind explanation.

I'm confused right now since very simple code like below Local $test = RegWrite("HKEY_CURRENT_USER\Software\Test", "TestKey", "REG_SZ", "Hello this is a test") $code = @error If $test = 0 Then MsgBox(0, "error", $code) $test = RegWrite("HKEY_CURRENT_USER\Software\Test\here", "TestKey", "REG_SZ", "Hello this is a test") RegDelete("HKEY_CURRENT_USER\Software\Test") works very fine without showing any error sign. I think other lines are affecting on the permissions that my program needs.

I found out that RegDelete does not work properly on Windows Developer Preview. It also does not work when it's run as compatibility mode, and administrator. ADDED : The error code was -2. But it looks that same source works on Windows XP and Windows 7. And I'm sure that RegWrite works on every version of windows including 8 (Developer Preview). So what i'm curious is if there are any other ways to delete Keys/value without using the given function 'RegDelete' Thanks. I ask for your understanding regarding English is not my 1st language.