I receive an error when I try and attach a PDF to the customer record. "an unexpected error occurred". Has anyone had this issue and corrected it?

I want to ensure you're able to add an attachment to your customer's record in QuickBooks Online, @mcrino.

I tried to attach a PDF file/other file types to the customer's profile using our test account and everything went well. Based on your scenario, it's possible that you're experiencing some kind of a browser-related issue. 

Your default browser's history data may be tainted, which could result in unexpected program behavior. Try uploading your attachments while using an incognito or private browser. Any of the following keyboard shortcuts can be used:

• Google Chrome: Ctrl + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Safari: Command + Option + P

The following file types can be added to your QuickBooks Online account in order to safeguard your account's security:

• PDF
• JPEG
• PNG
• DOC
• XLSX
• CSV
• TIFF
• GIF
• XML

If you're able to include the attachment with ease, I suggest going back to the main browser and clearing your regular browser cache to prevent unusual browser behavior moving forward. On the other hand, try using other supported browsers if the issue persists.

I'm also adding this module to learn more about what transactions in QBO support attachments: Add or delete attachments in QuickBooks Online.

Loop me if you need extra assistance regarding attachments or QuickBooks. It's my pleasure to be of help always. Keep safe!

I currently use Opera as my browser but tried your suggestion in Safari.  I still experience the error.  I had the wording wrong "unexpected upload problem". I attached the screen shot

Thanks for coming back, @mcrino. 

I appreciate you for providing us with a screenshot to better isolate the issue and performing the recommended steps to resolve this one. I've checked her on our records and there's no reported case where customers encounter an error when attaching a PDF. 

Since the recommended solutions are not working, I'd suggest contacting our Customer Support Team. They'll pull up your account in a secure environment and investigate what's causing this issue. You may send a message via chat, call us at a time convenient to you, or we’ll get in touch with you instead. To ensure we address your concern, our representatives are available from 6:00 AM to 6:00 PM on weekdays and 6:00 AM - 3:00 PM on Saturdays, PST. See our support hours and types for more details about this one. Here's how:

1. Go to the Help icon on the top right.
2. Enter your concern in the search field.
3. Select Talk to a human.
4. Click the OK. To get you to the right human, in a few words, tell me what you need help with option and tap I still need a human.
5. Press Contact us.
6. Tick Continue.
7. Choose Message an agent or Get a callback.

Feel free to visit our Invoices and payments page for more insights about managing your sales transactions.

I want to make sure everything is taken care of for you, please let me know how it goes or if you have any other issues or concerns. Just leave a comment below and I'll get back to you. Take care always.