CAUSE
This usually happens when the default rights in %Systemroot% or
%Systemroot%\System32 have been modified. Changing the rights in the
%Systemroot%\System32 directory to restrict access may render the utility
NTBackup unusable.
For example, the default rights in the %Systemroot%\System32 directory are
as follows:
Administrators Full Control
Creator Owner Full Control
Everyone Change
Server Operators Change
System Full Control
An administrator may want to change the rights of the group Everyone if
users are logging on to the console to perform various administration tasks
(such as back up system, check application log files, file maintenance, and
so forth). After modification, the rights are as follows:
Administrators Full Control
Creator Owner Full Control
Everyone Read (RX) (RX)
Server Operators Change
System Full Control
A user who performs nightly backups and who is only a member of the
Backup Operators group will not be able to back up the system. This is
because NTBackup creates its Backup.log file in the %Systemroot% directory
(the default location) and temp files(catalog files) created by NTBackup
are created in the same directory where NTbackup.exe is located. The
Backup.log file can be moved to any location on the hard disk by changing
the default location in the Backup Information dialog box in NTBackup, but
the temp files created by the application cannot be changed.