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Unable to open several commonly used websites including gmail

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I'm unable to open some commonly used websites including gmail. I get the following error message:

Secure Connection Failed

An error occurred during a connection to www.google.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.
I'm unable to open some commonly used websites including gmail. I get the following error message: Secure Connection Failed An error occurred during a connection to www.google.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.

All Replies (4)

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You can try to disable DNS over HTTPS.

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":

See also:

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There is a comprehensive article about that error (which is unique to Firefox) and possible remedies in the article linked below (you will need to remove the blank space in the link).

https://appuals. com/pr-end-of-file-error/

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^: Note that I included that page in my above reply.

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Note that our replies were almost contemporaneous.