This is just a function I came up with in about 1 minute and thought I would share it with the community. It has no real practical use, so take it as something to learn from. #include <Constants.au3> MsgBox($MB_SYSTEMMODAl, '', CreateGUIDFromString('Some very simple string.')) MsgBox($MB_SYSTEMMODAl, '', CreateGUIDFromString('A GUID string.')) MsgBox($MB_SYSTEMMODAl, '', CreateGUIDFromString('1 chr')) ; #FUNCTION# ======================================================================