Unable to shutdown/restart Windows

Do you get this error when you try to shut down Windows? Solution: 1. Kill explorer.exe process 2. Start explorer.exe process. You can start new process by going to File menu in Windows Task Manager. Select "New Task (Run...)" and enter "explorer.exe" and Ok to start this process. Now your computer will shut down. This error occurs when you try to copy or move a file from your computer to another computer and cancel the process in the middle. In my case, I was trying to copy my VPC image to another machine but cancelled the process. Later when I tried to shut down Windows in my VPC, it threw this error. Killing explorer.exe resolved the issue.