On a Document Library /AllItems.aspx page, drop-downs fail because MNU_Open Function cannot be found. When using IE8 debugger Core.js is empty, but Fiddler shows content loaded. What is keeping IE8 from using Core.js?Everything works on other pages, something wrong with IE8 by dropping Core.js content?

Hi Multisy,I could you locate the cause of the issue from your description if the AllItems.aspx is not customized. As issue is existed on the specific page, a quick solution is that create another AllItems view to replace the corrupted one and set it as default view. Here are the detailed steps: 1. Navigate to Documents Library > Settings page. 2. Create a new Standard View in the Views section. 3. Modify the view based on your requirements, and save it as NewAllItems or other names. 4. Back to the Documents Library > Settings page. 5. Click the NewAllItems view, and set it as default view. 6. Save and exit. Hope the information can be helpful. -lambertSincerely, Lambert Qin | Microsoft TechNet Managed Forum Support Posting is provided "AS IS" with no warranties, and confers no rights.

Still have this problem with IE8 & Windows Server 2003. Other IE8 in different OSes do not have this problem.Use Firefox or Chome.