Latest version AdwCleaner 7.0.0.0 will not run on XP SP3 "Not a valid Win32 application".
EDIT: OK so I have just read on Malwarebytes forum that XP and Vista are no longer supported, fair enough, but you may want to drop XP and Vista from the "Compatible with" list on this page? https://toolslib.net/downloads/viewdownload/1-adwcleaner/