I had several pop-ups with the following message "Unable to open http:\\ The internet site reports that the item you requested could not be found. (HTTP/1.0 404)"

I cleaned up the file, which had broken links from early 2000s, by cleaning-up the following:
- Formulas from the Name Manager (I also cleaned-up the hidden ones by running a macro to show ALL of them);
- Conditional formatting from all worksheets including hidden ones;
- Data validation from all worksheets including hidden ones;
- Old connections which weren't necessary anymore.

This removed all but one link which still pop-ups when I open the file. There is one adequate remaining connection. When I remove the connection, the pop-up disappears. So I thought the other file might be the problem. I cleaned-up the other file by doing the same process as above. The problem remained.... I then proceeded to identify where were the links being made with the file by searching ".xl" in all workbooks. It all comes down to only 8 formulas. The problem is that these formulas have no errors and are a simple IF+VLOOKUP. I checked the results of these formulas and they all make sense. Nonetheless, when I remove those 8 cells, the pop-up disappears. So I thought the file might be corrupted. I then proceeded to remove those 8 cells, save the file, closing it, and reputing the same links afterward. After I put the formulas in these cells, the pop-up reappears again....

The thing is, the URL pop-up message still showing has absolutely no tie with these 8 cells and it talks about a link from 2014....

What's up with that?

Cross-reference: https://www.mrexcel.com/forum/excel-...1-0-404-a.html