I have a problem with SharePoint 2010 while we are using it in IFRAME html element (in CRM). When user try to open document library in windows explorer ("Open with Explorer" button click) he gets two pop-up windows - one is document library in windows explorer, but another is browser window with error "Navigation to the webpage was canceled". Users are using IE 8 browser in XP Windows (in IE 9 there is no second popup window with error).
My question is - how can we avoid second popup window with error (for IE 8) users ? Or maybe there is a solution to make windows explorer open up in the same window (not pop-uped, like it was in SP 2007)?