I have a file that pops up to install/ open  7de2fd7.js

Windows 8.1 has a caution message , unsure where this file originated from or how i keep getting.

 

I presume it has stuck itself on hard drive but search shows nothing.

 

I am one of the ones who tried windows 10 and found it be slower and freezing issues, so I removed,

 

any thoughts or answers appreciated.

 

Jagsbeach