Let's perform some troubleshooting steps so you'll be able to start printing your works again in QuickBooks.
To start with, let's update your QuickBooks to the latest version released. You can consider this as the reason why it suddenly stops printing your forms.
From there, let's test if your printer successfully prints from outside your QuickBooks. If it didn't work, let's reconnect your printer. Here's how:
In addition, here's an article you can read to learn more about resolving your printing issues and more troubleshooting steps: Resolve Printing Issues.
As always, you can visit our Help Articles page for QuickBooks Desktop if in case you need to learn some "How do I" steps.
Please let me know in the comment section down below if you have any other questions. I'll be always around ready to help.