What was the failure of Microsoft Office XP?

There Is now Failure issues of Microsoft Office XP

Microsoft Business and Developer products, including Windows and Office products, receive a minimum of10 years of support (5 years Mainstream Support and5 years Extended Support), at the supported service pack level.

Windows XP and Office XP and2003 will go out of support on April8,2014. If your organization has not started the migration to a modern desktop, you are late. Based on historical customer deployment data, the average enterprise deployment can take18 to32 months from business case through full deployment. To ensure you remain on supported versions of Windows and Office, you should begin your planning and application testing immediately to ensure you deploy before end of support.