> The mirroring stops with the following error 
message: 
> Error: 'Proxy authentication required' (407) at link 
> www.microsoft.com/ms.htm (from primary/primary) 
> My proxy settings are correct. What else can be the 
> problem?
The proxy might not recognize "basic authentication", 
used by HTTrack engine. HTTrack does not *yet* have 
challenged authentication system which used a 
challenge string/hashed response. This might be done 
in the future, when I have some time! :)