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Duck duck go returns PR_END_OF_FILE_ERROR

  • 2 cavab
  • 1 has this problem
  • 29 views
  • Last reply by FredMcD

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If I type a search term into the address bar, or type duckduckgo.com into the address bar, I get a long delay and then:

Secure Connection Failed

An error occurred during a connection to duckduckgo.com. PR_END_OF_FILE_ERROR

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

Other sites (google.com) respond instantly, but who wants that?

If I type a search term into the address bar, or type duckduckgo.com into the address bar, I get a long delay and then: ''Secure Connection Failed An error occurred during a connection to duckduckgo.com. PR_END_OF_FILE_ERROR The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. Please contact the website owners to inform them of this problem. '' Other sites (google.com) respond instantly, but who wants that?

All Replies (2)

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What security software do you have?


You can check the connection settings.

  • Settings -> General -> Network: Connection -> Settings

If you do not need to use a proxy to connect to internet then try to select "No Proxy" if "Use the system proxy settings" or one of the others do not work properly.

See "Firefox connection settings":

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https://www.bing.com/search?q=pr_end_of_file_error

radi.stoyanov said Turns out the option DNS over HTTPS is what caused the problem.

jamesafuf123 said https://support.mozilla.org/en-US/questions/1264659#answer-1237475 my ISP was blocking sites like that

cor-el said This usually means that Firefox wasn't able to find a cipher suites to use to connect to this server and reached the end of the list. There can be two possibilities: one is that the server is outdated and doesn't support modern cipher suites, another might be that the server only supports a few cipher suites and Firefox doesn't support any of these.

You can check your browser and possibly compare this with the server setup.