Unable to upload attachments to invoices, can someone help?

Hi s-gelinas94-outl,

Welcome to the Community. Being able to upload attachments to invoices is essential in order to keep track of your documents. QuickBooks is a great program that offers the ability to upload attachments to invoices in a simple way. I'd be glad to help you with this.

In QuickBooks Online, you can add attachments to invoices that you send to your customers. I'll explain how.

1. Log into your account from a browser.
2. Click on the Sales on the left navigation menu and then invoice.
3. Choose the invoice from the list > Edit invoice.
4. Scroll to the bottom of the page and attach the file using the 'Attachments' section.
5. Once attached, click on Save and close. 

If you get any notification error, the issue may be related to browser cache and cookies as they prevent the system from functioning effectively. I'd encourage you to refer to the following steps to complete some browser troubleshooting.

• Clear browser cache.
• Try in a private browser window.
• Use another browser type.
• Make sure you're using supported browsers.
• Turn off any ad and popup blockers temporarily.

If the steps provided above don't work, I recommend that you contact our customer support team as they can have a closer look at how to resolve this. Here are some options available to reach out to our customer support team.

Schedule a Callback or start a Chat: click (?)Help in the upper right in QuickBooks Online > type and enter "Contact support" into the QB Assistant > click Contact Us > explain your situation > click Let's Talk > choose Get a callback or Start a Chat.
Social Media: Facebook, Twitter, and Instagram.
Support hours are from Monday to Friday between 9 a.m. and 8 p.m. ET.

Feel free to reach out if you have any questions, I'll be happy to help.