You can check the documents using a function similar to
Code:
Function IsThisLinkUsedIn(strLink As String, oDoc As Document) As Boolean
Dim oLink As Hyperlink
For Each oLink In oDoc.Hyperlinks
If oLink.Address = strLink Then
IsThisLinkUsedIn = True
Exit For
End If
Next oLink
Set oLink = Nothing
End Function
e.g.
Code:
Sub Macro1()
MsgBox IsThisLinkUsedIn("https://www.gmayor.com/Word_pages.htm", ActiveDocument)
End Sub
Loop through the documents in a folder and check each one with the function and stop looping when you find the document that returns True. The link string must be the exact address of the link.