If you are using a locked down browser, there are a few ways to delete it. The most common way to delete a locked down browser is by using the Windows Task Manager. To open the Task Manager, open the Start screen and type taskmgr.exe. Once the Task Manager is open, click on the three lines in the top left corner of the window and select “Task Manager” from the list. On the right side of the window, you will see a list of all your currently running tasks. If there is a lockdown browser listed in this list, it will be highlighted in blue and you can click on it to start deleting it.