1. Uninstall Reader 8 using the Control Panel and Add/Remove Programs.
3. Run the Cleanup Utility to remove the Installer Registry Settings for Reader 8 (and 9 if it's in the list).
5. Download and install Reader 9.3.
Thanks for your quick reply. I previously tried to remove the Adobe 8 program through the control panel "add/remove programs". Problem is that I get the same error message (regarding the key) that I get when I try to install the Adobe 9 program, so it doesn't uninstall. Any suggestions? Thanks very much.
Have you tried the Windows Installer Cleanup Utility, as suggested in the previous post?
So I am having a similar error. I originally had this error when trying to update Adobe 9.3.1:
Error 1402. Could not open key: UNKNOWN\Components\... (a long *** string of numbers and letters). Verify that you have sufficient access to that key, or contact your support personnel.
Although I was fairly sure I had sufficient access and was running everything as an admin, I decided to instead uninstall and reinstall Adobe. I tried uninstalling through normal means, but was met with the error again. So I used the Windows Install Clean-Up tool in order to remove any traces of Adobe. However, now I cannot reinstall Adobe because I get the same exact error.
EDIT: I need Adobe Reader immediately, so I used system restore to get it back on my computer. The error still pops up when I try to update though.