Problem

In  your SharePoint environment you see lots of login boxes, sometimes two, three, and even four.  Very often uses enter their credentials several time only to see a page with a broken image or they simply hit cancel and magically see a perfectly normal SharePoint page.  This is obviously not a critical issue but can be annoying to your users especially when they are visiting a site to which they should not be required to login.

Explanation

Some of the possible causes include:

• Closed web parts that SharePoint still loads in the background
• Images hosted on different sites, often these image are loaded from a different URL
• Pages passed through using page viewer web part, often this pages are referenced via a different URL
• User profile pictures
• Multiple URL’s such as http://sharepoint & http://sharepoint.internal

Solution

• View the closed web parts and remove those that are unnecessary

Use the “Contents=1” switch to view closed web-parts on the page

Hint : http://sharepoint/default.aspx?contents=1 (you can also see closed web-parts by opening the “Advance Web Part Gallery” which is available at the bottom of the “Add Web Parts” screen

• Delete unnecessary web-parts
• Verify all images and page viewer web-parts reference content to which the current logged in user has rights
• Verify that all images and page viewer web-parts aren’t loaded through a different URL
• Remind your users to delete unused web-parts instead of closing them.  Remember that you have to be in “Edit Mode” for the delete choice to be available from the web-part menu.
  

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