I've got some steps to fix printing issues, WillowG.

You can try updating or repairing Adobe Reader/Acrobat to the latest version. By doing so, it can fix most printing problems in QuickBooks Online.

You can update AdobeReader/Acrobat by checking the  Adobe website for detailed instructions.

If it doesn't work, you can repair your Adobe installation. Here are the steps:

1. Close Acrobat/Reader and all open web browser windows.
2. Select the Start button at the bottom left of your screen.
3. Type Control Panel, then press Enter.
4. Select Programs and Features.
5. Select Acrobat or Adobe Reader, then Uninstall/Change.
6. In the Setup dialog box, select Next.
7. Select Repair, then Next.
8. Select Install.
9. When the process is complete, select Finish.

Reboot your computer and try printing your invoice.

Also, I've included some resources you can check for additional reference about fixing printing issues:

• Fix printing issue on browsers for Windows.
• Test sequence for PDF printing issues.

You can always post your concerns anytime here. We are open to help 24/7.