Can't change the default paper size from Letter to A4 in Word.

[charsiufan]

Every time I click on the printer properties for my document in MS Word 2015, on the Paper / Quality tab it shows the paper for each tray as 'Letter'.  If I change it to 'A4' and click OK and check again it defaults back to 'Letter'.  This means my document is being slightly scaled down and my labels aren't aligning properly.  

In 'Page Setup' in Word it shows the paper size to be 'A4'. If I go to the HP Printer Assistant and click 'Set Preferences' it shows all trays to be 'A4'.  

I have uninstalled the driver and removed the device and reinstalled twice from this PC and still having this issue.  Please help, I have to print 2000 labels by tomorrow and not making much progress!

[Sunshyn2005]

Welcome to the HP Forums @charsiufan!

If you still require assistance with your paper size settings, I'd be happy to help. First and foremost, I'd like to determine the root cause of the issue. Are you able to print on letter size paper when printing from a different program, is this issue limited to Word? 

If the issue occurs when you print from all programs I suggest removing the driver from the Printer Server Properties.

1. In the ‘Devices and Printers’ folder

2. Choose ‘Print server properties’.

• Win XP – With no printer selected, click ‘File’ then ‘Server Properties’.
• Windows Vista – With no printer selected, press ‘Alt’ then click ‘File’ then ‘Server Properties’.
• Windows 7/8, 8.1, and 10 – Select any printer in the ‘Devices and Printers’ folder and click ‘Print Server properties’ above.

3. Click on the ‘Drivers’ tab at the top of ‘Print server properties’ window

4. Choose the printer you want to uninstall and click ‘Remove’

5. Choose 'Remove driver only'

6. The next screen will give a warning, letting you know that deleting the driver package will remove it from the system. Click ‘Yes’ to say that you are sure you want to do this.

If documents are stuck in the print spooler, you may see an error, cancel any documents pending in the print queue, or try restarting the print spooler, then try to remove the driver from ‘Print server properties’ again. If it still won’t remove the package, restarting the computer and the printer should resolve this ‘in use’ error and allow the driver to be removed.

• If the you continue to get an 'in use' message follow the steps in the document here; The Specified Printer Driver is Currently in Use

After the driver is removed, open Start > All Programs > HP folder > Printer folder > HP Setup and Software (or the printer icon). The Setup and software screen will open and you can click on Connect a new printer.

If the issue only arises when printing from Word, I recommend creating or opening a different document to see if the issue is how Word is processing that particular document. I know from your post that you have a Windows 10 PC, but the following thread on the Apple Forums discusses this very issue, take a look: Word default page size as A4.

According to one user, "A document created with a different page size is going to open that way every time". Thus, I think it would be a good idea to create a new document in Word to see if you can print it onto letter size paper.

Let me know the outcome of your efforts and I will get back to you. If this resolves the issue, please be sure to click on the Accept as Solution button below to mark your post as solved. 

Thanks.