Symptoms
Windows in Parallels Desktop virtual machine is asking to press Ctrl+Alt+Del to log on:
![](http://kb.parallels.com/Attachments/22793/Images/windows7logon.jpg)
However it doesn't work when I press these buttons.
Cause
On most Mac keyboards the Delete key works as Backspace in Windows. To make it work as Windows Delete key you need to press Function (Fn)+Delete.
Resolution
Please press Function+Control+Option+Delete buttons:
![](http://kb.parallels.com/Attachments/kcs-10488/CtrlAltDel1.png)
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