Abschaltung per:
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_HTTP_USERNAME_PASSWORD_DISABLE] "iexplore.exe"=dword:00000000 "explorer.exe"=dword:00000000
oder
[HKEY_CURRENT_USER\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_HTTP_USERNAME_PASSWORD_DISABLE] "iexplore.exe"=dword:00000000 "explorer.exe"=dword:00000000