There can be many reasons why the Mouse double-click does not open files & folders in Windows. Here are some fixes to resolve this issue.

Go to "Control Panel>Folder Options" and make sure the "Double-click to open an item" is selected. If it already is, maybe you do have a mouse problem.

It could be due to wear and tear, or it could be due to something else. Before you buy a new mouse straight away, here's what you can try to fix it.

If your mouse middle click is not working in Firefox, use the following solutions to resolve the issue. Before you proceed, we suggest you see if the same problem is occurring in other browsers ...

The scroll wheel button on my year old Intellimouse Optical was wearing out and not always clicking when I pressed it. So I e-mailed them and had a new mouse (2nd gen too, original was a 1st gen ...