A machine running Windows Server 2003 R2 Standard Edition SP2 recently began\nyielding the error "403 - Forbidden: Access is denied." whenever Microsoft\nUpdate is browsed on the machine. This occurred after a recent Microsoft\nUpdate was attempted on the machine. The machine's host file and proxy\nsettings have not been modified in any way and are the same as before the\nerror was encountered. Other machines on the same network that also run\nversions of Windows Server 2003 have not experienced the error. The error\noccurrence is seemingly out of the blue and totally unexpected. Microsoft\nUpdate cannot be browsed at this time on the machine. Any advice concerning\nhow to rectify this problem would be greatly appreciated.