1. Make sure your "Theme" service is running
2. Then "System Properties" -> "Advanced" -> "Performance"
3. Make Sure "Use Visual Styles on windows and buttons" is checked.
If failed, repeat to 1-3 or restart. It should be fixed

Here is the error:
Msg 214, Level 16, State 201, Procedure xp_cmdshell, Line 1
Procedure expects parameter 'command_string' of type 'varchar'.
Because xp_cmdshell CANNOT use varchar(max) with xp_cmdshell
I dislike when I click the icons on the Windows taskbar then the icon will become large.
It's fine when you just need click one icon at a time.
But if you want to click two and more icons quickly at a short time?
Sometimes you will click the software twice or more especially Outlook