Error related to outlook and excel

I have installed Uipath after formatting my system. Whenever I use any excel application scope activity I get an error saying “Install the Microsoft excel application”. But excel is already installed. I have installed all the packages, but still it is giving me the same error. Kindly help me out.

Check this thread,

Thanks,
Rammohan B.

Actually, when I try to use MS office I face Microsoft office error 30034-4 which i need to fix, hope to recieve some help.