There’s a quick and easy fix for this problem.
First, check that that you run a virus scanner to get rid of the virus.
Then initiate the regsvr32 command above, which should fix the problem.
How to Fix Double Click Always Opens Search in Windows Explorer
If you mess around in the registry, or install some different software packages that add things to the right-click menu, you can end up with a problem where the default action on a folder is always "Search.
