How to Fix - by default, documents saved as templates?

by default, documents saved as templates

When I launch Word 2010 the blank document that opens is .dotx.  How can the default be changed to .docx?   I would prefer to save the template settings if possible.
Thank you.

Anwsers to the Problem by default, documents saved as templates

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File>Options>Save and select "Word Document (*.docx)" from the "Save files in this format:" dropdown.

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Open Windows Update by clicking the Start button Picture of the Start button. In the search box, type Update, and then, in the list of results, click Windows Update.

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