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Secure Connection Failed: unable to connect to internet

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i am unable to use mobile hotspot right now. i am using mozilla firefox as my default browser, today afternoon i had used the interner with same mobile and laptop but right now i am unable to use interner it shows following msg

An error occurred during a connection to 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.

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Hi pvgadakh, glad to see you on Mozilla Support Forum.

Try refreshing the browser, it will automatically restore all the default settings.

  • Click the menu icon, then click on “Help”. Click on Firefox's main menu button, represented by three horizontal lines.
  • Click “Troubleshooting Information”.
  • Click on “Refresh Firefox”.
  • Confirm.
  • Click “Finish”.

If it doesn't solved your problem, then feel free to ask in Reply Section. Thanks for raising your question In Mozilla Support Forum.