A few troubleshooting tips may help solve the problem. Verify that the page orientation is set to "Landscape" in Word. Click the "Layout" tab, then click the "Orientation" button and select "Landscape" if it is not highlighted. Try printing the document again.
A virus or malware infection can cause problems with software or the operating system, causing incorrect commands to be sent to a printer. The printer may receive wrong commands or invalid commands, causing it to print in portrait mode instead of landscape mode.
How to Change the Print Format to Horizontal on Microsoft Word
How to Change the Print Format to Horizontal on Microsoft Word : Microsoft Office Help
Frequently Asked Questions
Why can't I Print landscape in Word?
Click or tap in the document. Go to Layout > Orientation, and then select Landscape. Go to File > Print. Under Settings, make sure the orientation box says Landscape Orientation.
Why can't I Print landscape in Excel?
On the Page Layout tab, in the Page Setup group, click Orientation, and then click Landscape. Note: If you don't have a printer set up, the Orientation option will appear dimmed, and you won't be able to select it. To resolve this, you must set up a printer.