Error message when selecting existing attachment library

Let's find out why you're getting the error when trying to attach a file in QuickBooks for Mac, MercedesOne.

You'll want to verify if QuickBooks files were connected to the Attachment Library. To do this, you can follow the steps below. You can use file names, dates, or keywords for a better search result.

1. Go to the Company menu, then select Attachment Center.
2. Enter a search term in the field.
   
   

If you want to make any changes in your attachment, you can save a copy of the attachment and make the changes, then re-attach it to the transaction or record it in QuickBooks. Here's how: 

1. Go to the Company menu, then select Attachment Center.
2. Under the Attached to the column, select the link.
   
   

Once done, double-check if you're still seeing the error message. If so I recommend getting in touch with our support team to investigate this further. They have the tools to pull up your account securely.

Please read this article for more information: Manage attachments in QuickBooks for Mac. You'll also want to read this thread for additional information: Attachments in QB for MAC 2020.

I've included these helpful articles in case you'll want to read more about QuickBooks for Mac.

Keep in touch if you still need assistance with attaching files. I'll be here to help.

Thank you for your reply. 

The issue was not configuring the attachment library. I had been using the attachment library for quite some time in an older version and again with the new version (QuickBooks for Mac 2021). The issue is that I suddenly got an error message when I do. 

My Solution:

1) Create another attachment library.

2) Copy the contents from the old attachment library to the new attachment library. 

Suddenly all of my attachment were back. I, then deleted the old attachment library and renamed the new attachment library so I didn't have some funky file name. I am back to normal.