09-16-2002 05:42 PM
Possibly relevant data: OS is Win95, player is Mediamatics DVDExpress from the HP Omnibook 900/4150 DVD Software disk, processor is PII 266 Mhz. Logging in as administrator or as user makes no difference. Setting region code makes no difference. This notebook is not connected to the Internet, so must get any driver downloads via floppies written on another machine.
09-17-2002 12:26 PM
"Key exchange for DVD copy protection failed"
This seems to be an issue of user rights to the registry key.
Give User FULL CONTROL of the key:
set permissions on the HKEY_LOCAL_MACHINE\SOFTWARE\ALLNODE Key to Full Control for the Everyone group.
This Key contains a value for the DVD_Region.
Once the permission was granted, users could immediately view DVDs without the Key Exchange error.
11-02-2002 02:15 PM
The other leads said DVDExpress left many tracks, so I posted a query on how to uninstall it safely, and got an answer saying use Regedit! Have not yet worked up the nerve to do so, and may try Carmelo's solution first, when I get round to it, though it seems to address only one of the failure modes I ran into
04-06-2003 03:40 PM
"Key Exchange for DVD copy protection failed"
DVD Express 5.01.04.164
Driving me pretty crazy!