excel error popping up when opening excel files

Try to save the attachment file onto your desktop first and then open it from there.

I must have said that wrong. It's not an attachment.  IT is a file in documents.  I said I wanted you to look at a screenshot attached. This happens when I open a file after I have excel open.  I browse to documents folder and than I get the error message.

It seems strange that the link you posted is leading to an internet cache folder for Outlook. Give this a try: Using File Explorer, navigate your way to that link to see if your Excel file is actually located there. You can also File Explorer to search for that file. Once you locate the file, right-click it and select Open with. If Excel does not appear as an option, select Choose another app. If Excel does not appear in that dialog box, choose More apps. It should appear there. If you can get that file opened, I would save it in a different location.

Here's a possible solution:

1. Click Start, click All Programs, click Microsoft Office [your version] Tools (folder)
2. Open Microsoft Office [your version]  Upload Center.
3. In Upload Center, click Settings.
4. Under Cache Settings, click Delete cached files.
5. When you are prompted, click Delete cached information
6. Click 'OK' to close the Upload Center

Flyster.  The I used file explorer and the document is not located there.  
Here is a screenshot of when I click on "this Pc" when I am saving rather than browse. I click OK and than the save as box comes up.  Showing it wants to save to Network Shortcuts.   I DID tell the user to use browse and that fixed the issue.  

In Excel 2019 you can Pin folders so you don't need to Browse.