Invoice Attachments

The sudden onset of this issue indicates a communication disconnect between QuickBooks, Windows, or your email provider. To help narrow down the exact cause, could you share a bit more context about what email setup you are using and what exactly happens when you try to send? For instance, does the system freeze, or do you receive a specific error message? If you can provide a screenshot, that would be very helpful. Please just be sure to blur out any personal or company information before uploading to keep your data secure.  

In the meantime, please perform the troubleshooting steps from Solutions 1, 2, and 3 outlined in this article: Fix PDF and printing problems with QuickBooks Desktop. This resource will guide you through each step.  

Let me know if you run into any trouble with those steps or have any other questions, and we can go from there.