Ha ha!
It’s an easily located text file that you can edit with notepad.
If you look at it, you might even see the line that is causing the trouble, if the other folks are right.
C:
Windows
System32
Drivers
Etc
Hosts file should be in the Etc folder.
what is notepad and how do I find it. I have heard for years that there is something like that in MS but I have never found it. Occaionally it has popped up.
But I am not really acquainted with it.