Document Expired - The requested document is not available in Firefox’s cache.
Your present published results do not solve the problem.
Why, when I try to go back to a duckduckgo.com page, do I get this message and how do I resolve the issue? What makes duckduckgo a sensitive document? This started recently. I had no issues before.
Document Expired This document is no longer available. The requested document is not available in Firefox’s cache.
As a security precaution, Firefox does not automatically re-request sensitive documents. Click Try Again to re-request the document from the website.
Wšykne wótegrona (1)
This can happen if you use the Back key to return to a page that was retrieved by sending POST data or otherwise has expired. Best is not to use the Back button in case you filled data in a form on the page.