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Firefox fails to load certain sites

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  • 1 has this problem
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  • Last reply by FredMcD

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Firefox fail to load certain site with message Secure Connection Failed An error occurred during a connection to www.google.com. PR_END_OF_FILE_ERROR

I tried all the Mozilla support options: clearing cache, refreshing firefox, load in trouble shooting mode, reinstall and problem still exists. Other browsers don't have problem

Firefox fail to load certain site with message Secure Connection Failed An error occurred during a connection to www.google.com. PR_END_OF_FILE_ERROR I tried all the Mozilla support options: clearing cache, refreshing firefox, load in trouble shooting mode, reinstall and problem still exists. Other browsers don't have problem

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This should not shut my internet connection down, should it? I had a problem just after I tried this. But it appears to be working now. Thanks for the quick help

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Hello,

This error can be caused by many things, but I think that the easiest one to try to see if it is causing issue is DoH. It is a measure that although secures your dns queries, may not be the best, as errors like this may crop up. To disable this, go to about:preferences#general and find the network settings. Click on change settings and turn off DNS over HTTPS.

More information about DNS over HTTPS can be found at DNS-over-HTTPS (DoH) FAQs

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Chosen Solution

This should not shut my internet connection down, should it? I had a problem just after I tried this. But it appears to be working now. Thanks for the quick help

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Just In Case; Web search: 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 There can be two possibilities: one is that the server is outdated and doesn't support modern cipher suites, another might be that the server only supports a few cipher suites and Firefox doesn't support any of these.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. https://www.ssllabs.com/ssltest/viewMyClient.html

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