Internet Explorer 7 and Dynamics CRM 3 – Remove the Alert

Internet Explorer 7 has introduced a number of security and notification features that alert the user when potential underhanded activity might be taking place. There's also an alert for Dynamics CRM Users: "The webpage you are viewing is trying to close the window. Do you want to close this windows?"

There is a workaround for this issue by the Dynamics CRM Team:
From the IIS wwwroot folder, locate the Microsoft CRM Web.Config file.
Open this up in a text editor.
Find the line which says: add key="AppMode" value="On"
Change this to say: add key="AppMode" value="Off"
Save.

Now when you load up the web client Microsoft CRM will load into the main Internet Explorer window on its own tab.

(Workaround by the Dynamics CRM Team)