Let me be the first to welcome you to the Community, @Mar51.
To fix this error, make sure QuickBooks already have a folder for your attachments.
- Browse to the location where your company files stored. Default location: C:\Users\Public\Public Documents\Intuit\QuickBooks\Company Files.
- Create a new Attach folder.
- Rename Attach folder by adding "_OLD" to it.
- Create a new folder and name it Attach.
- Copy the contents from the old folder.
- In the new Attach folder, create a folder that matches the name of the company file. Open the new folder.
- Create new sub-folders named Inbox and TXN.
- Copy and paste contents over to respective new folders from their old counterparts.
- From the QuickBooks Company menu.
- Select Documents.
- Choose Repair Attached Documents Links.
- Click Repair Links.
If you continue to get the same result, please check out this article for additional troubleshooting steps: Troubleshoot PDF problems.
You can refer to this article if in case you want to set up your email in QuickBooks: Set up your email service in QuickBooks Desktop.
Please let me know if you have other concerns with QuickBooks. I will be here than happy to help. Thanks for dropping by and take care!