If a previously published link refers to a page on my site which is now missing, I get an error message. How do I find out what the URL was?

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Question: If a previously published link refers to a page on my site which is now missing, I get an error message. How do I find out what URL was? Can I find it somewhere in an error log?
 
Answer: We cannot change the error page and there is no log available to customers that can display the information. However, there is a simple online tool available to help you:
The tool actually follows the chain of redirects ... the redirect.aspx page redirects to the nonexisting product, which redirects to /error. Only the first redirect (under "301 Moved permanently") is relevant to figuring out what the old product or page was.
 
Please note: Since these are 301 redirects, if you change the redirect, you will have to clear your browser cache before you'll be able to see it work in your own browser.