You have a computer that has Microsoft Word 2010 installed.
You create a new Word document.
On the File tab, you click Print.
You have the Paper size set to either Letter (for the English language) or A4 (for Japanese or other East Asian languages).
Under the listed printer, you click Printer Properties.
In this scenario, the paper size is listed as A3 instead of Letter or A4 in the Printer Properties dialog box.
Note This issue occurs only for specific printer drivers.
This problem occurs because Word 2010 specifies an invalid value for the paper size when it communicates with the printer driver. This problem does not occur for most printer drivers, because most printer drivers ignore this invalid value when it is sent.
To work around this problem, set the paper size to a size other than Letter or A4, and then set the paper size back again. This updates the cached value for the paper size, and the correct value for the paper size is sent to the printer driver.
Consider the following example:
A Word 2010 document that uses the A4 paper size is experiencing this problem. To work around this problem, follow these steps:
On the File tab, click Print.
Change the Paper size from A4 to Legal.
Change the Paper size from Legal back to A4.
Click Printer Properties. The paper size is now set to A4.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.