You are going to need to provide a lot more information here to get the help that you deserve. The community is going to need to know things like:
I have a step-by-step article and a video tutorial on How to Upgrade to Lightroom CC that might help. I'll include the video here as well though I strongly encourage you to read the complete tutorial.
Hope this helps.
Thank you. Logging out and back in allowed me to open the program.