You are a desktop support technician for your company.

A user reports that she just installed Windows XP Service Pack 2 (SP2) on her computer that runs Windows XP Home Edition. Since installing SP2, she cannot use her Web-based e-mail application. When she logs on to the Web site, she can see her messages and the main Web page. However, when she attempts to open a message or create a new message, the message windows do not open. The user could use the application before she installed SP2.

What is the most likely cause of the problem?

A.
The user exceeded her message quota for this e-mail application.

B.
Windows Firewall prevents the e-mail application from working correctly.

C.
The Microsoft Internet Explorer pop-up blocker prevents the windows from opening.

D.
The Web site is down.