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this has only occurred after Firefox updated a few hours ago - so it cannot be out of date. Attempts to load pages such as Youtube and Ebay return the following

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  • Laatste antwoord van FredMcD

kenwf
kenwf
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Secure Connection Failed

An error occurred during a connection to www.youtube.com. Peer’s certificate has an invalid signature. Error code: SEC_ERROR_BAD_SIGNATURE 

   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.

Learn more…

Report errors like this to help Mozilla identify and block malicious sites

can't access ebay either for starters. It would be easier to list the pages I can access - no problems with Chrome or Opera - which I only started to use because Firefox has been so slow, taking literally minutes to respond. Oh, don't blame my PC, well above minimum spec to run Windows 10.

Secure Connection Failed An error occurred during a connection to www.youtube.com. Peer’s certificate has an invalid signature. Error code: SEC_ERROR_BAD_SIGNATURE 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. Learn more… Report errors like this to help Mozilla identify and block malicious sites can't access ebay either for starters. It would be easier to list the pages I can access - no problems with Chrome or Opera - which I only started to use because Firefox has been so slow, taking literally minutes to respond. Oh, don't blame my PC, well above minimum spec to run Windows 10.

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kenwf
kenwf Vraageigenaar
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oh, I have been asked to verify this by email sent to Yahoo which, when I try to access by Firefox results in

Secure Connection Failed

An error occurred during a connection to www.yahoo.com. Peer’s certificate has an invalid signature. Error code: SEC_ERROR_BAD_SIGNATURE 

   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.

Learn more…

Report errors like this to help Mozilla identify and block malicious sites

So are Ebay, Yahoo and YouTube malicious sites?

FredMcD
FredMcD
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There is security software like Avast, Kaspersky, BitDefender and ESET that intercept secure connections and send their own certificate.

https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can

https://support.mozilla.org/en-US/kb/firefox-and-other-browsers-cant-load-websites

https://support.mozilla.org/en-US/kb/secure-connection-failed-error-message

https://support.mozilla.org/en-US/kb/connection-untrusted-error-message

http://kb.mozillazine.org/Error_loading_websites