03-27-2013 12:27 AM - edited 03-27-2013 12:30 AM
Welcome to BlackBerry Support Forums
Are you getting any error while Installing , and do you have the administrative right over the Computer on which you are trying to install .Please refer to this Knowledge Base for help :
KB16236 : How to install the BlackBerry Desktop Software for Microsoft Windows.
I know the KB doesn't include Window 8 .Seen this problem with a few Windows 8 user.
Please try it again