I installed AE trial version then after two days I unistalled it through control panel as well as encoding. I tried to install premier pro trial but couldnt.
when I try to install PR creative cloud opens showing download error.
I installed creative cloud again but it didn't help.
Exactly WHAT error message?
Please read https://forums.adobe.com/thread/1499014
-try some steps such as changing browsers and turning off your firewall
-also flush your browser cache so you are starting with a fresh browser
A chat session where an agent may remotely look inside your computer may help
Creative Cloud chat support (all Creative Cloud customer service issues)