problem with my unity webplayer

i used to play games online using unity web player … but recently a pop-up appeared to tell me that the program failed to auto-update and i had to do it manually and a zipped file is downloaded

the peoblem is that i don’t know what to do with this file or where to extract it

Uninstall the webplayer, then download a fresh installer from Unity Real-Time Development Platform | 3D, 2D, VR & AR Engine. Install that and you should be good to go.