Double clicking the folder opens search instead of folder

This may cause due to installing some editable or listing software which adds a feature to folders.
When you right click on folder, search option will be on top of the action list. By default Double Click takes the first item in the action list. 
Hence, to get rid of this we need to set back it to default action value which is Open
How to Resolve:
Go to run or command prompt and execute the below command
regsvr32 /i shell32.dll






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