Is there a binary version of 2.4.4 client under Cygwin?

I assume this means that one no longer needs to use samba to back
Windows machines, is this right?

Is it any more robust at accessing files?  Below is a sample of the
files which I currently do not get backed up because of some Windows
permission issues I don't understand.  Is it possible (or likely) that
the Windows client will not have trouble accessing these files?  I.e.,
is it probably a samba issue that the Windows client would solve?

> ? ERRDOS - ERRbadshare opening remote file \WINDOWS\system32\config\system.LOG
(\WINDOWS\system32\config\)
> ? ERRDOS - ERRbadshare opening remote file 
> \WINDOWS\system32\config\software.LOG
(\WINDOWS\system32\config\)
> ? ERRDOS - ERRbadshare opening remote file 
> \WINDOWS\system32\config\default.LOG
(\WINDOWS\system32\config\)
> ? ERRDOS - ERRbadshare opening remote file \WINDOWS\system32\config\SECURITY
(\WINDOWS\system32\config\)
> ? ERRDOS - ERRbadshare opening remote file \WINDOWS\system32\config\SAM
(\WINDOWS\system32\config\)
> ? ERRDOS - ERRbadshare opening remote file \WINDOWS\system32\config\SAM.LOG
(\WINDOWS\system32\config\)
> ? ERRDOS - ERRbadshare opening remote file 
> \WINDOWS\system32\config\SECURITY.LOG
(\WINDOWS\system32\config\)
> ? ERRDOS - ERRbadshare opening remote file \WINDOWS\system32\config\SYSTEM
(\WINDOWS\system32\config\)
> ? ERRDOS - ERRbadshare opening remote file \WINDOWS\system32\config\SOFTWARE
(\WINDOWS\system32\config\)
> ? ERRDOS - ERRbadshare opening remote file \WINDOWS\system32\config\DEFAULT
(\WINDOWS\system32\config\)