Microsoft excel cannot access file via http

[jakobt]

I open an excel workbook and receives the following error:
Sorry we couldn't open: http://goldwing.shinhan.com "and a few Chinese letters".xls
I press okay
Then another message appear:
Microsoft excel cannot access the file http://Goldwing.shinhan.com and a few Chinese letter.xls


I have no idea where this URL is in the file. There is no macros in the file and no links?
Can this be from an installed .com addinn...