If for some reason, you need to restart your Windows File Explorer in Windows 10/8/7, this is the procedure you can follow. You may use the Task Manager, a desktop shortcut or the Context Menu.
In Windows 7, you would start the Task Manager. Select explorer.exe from the processes, and click on the End Process button.
This would kill explorer.exe.
Next, you’d click on File tab, choose New task (Run…), type explorer.exe in the box and click OK.
This will restart explorer.exe.
Windows 10/8 offers the context menu option to Restart Explorer in its Task Manager.
Alternatively, if you find that your explorer.exe freezes frequently or you are really into experimenting and testing customizations, creating a desktop shortcut to restart explorer would definitely be a more convenient option!
To do so, copy-paste the following in a Notepad and and save it as (All files) as a .bat file. Name it as RestartExplorer.bat, if you wish!
taskkill /f /im explorer.exe
Right Click Restart Explorer adds Restart Explorer option to Context Menu – you might want to check it out!
How to kill explorer.exe in 3 clicks may also interest you.