You may have accidentally deleted something
How to Disable Pinning Programs to the Taskbar in Windows® 7
So I recently ran into an interesting problem when I wanted to pin a program to the Windows 7 taskbar. Usually I just right-click on the open application and say Pin this program to the taskbar:
Unfortunately, something happened, or I did something wrong and this option disappeared! So I tried dragging the icon to the taskbar, thinking that would work, but that didn't work either! Instead I got a red circular sign that meant I couldn't drag the item to the taskbar. I figured something had gone wrong with the registry because I had tried to remove the overlay arrows on my desktop icons and had messed with the registry. This could probably be caused by other reasons, but the fact is that there is a registry value called IsShortcut that somehow got accidentally deleted.
In this article, I'll show you how to fix the problem so you can pin items to your Windows 7 taskbar again! Hopefully one of the methods works for you. If not, leave a comment and I'll try to help. Please note that there are a few programs that cannot be pinned to the taskbar.
