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cant access wikipedia.org due to security certificate error SEC_ERROR_UNKNOWN_ISSUER

Flap_Zappa
Flap_Zappa
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for the last few days I have not been able to access wikipedia.org due to security certificate error SEC_ERROR_UNKNOWN_ISSUER as wikipedia is a very mainstream site I am surprised they would have this issue. It affects firefox, chrome and MS Edge

for the last few days I have not been able to access wikipedia.org due to security certificate error SEC_ERROR_UNKNOWN_ISSUER as wikipedia is a very mainstream site I am surprised they would have this issue. It affects firefox, chrome and MS Edge
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FredMcD
FredMcD
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How to troubleshoot the error code "SEC_ERROR_UNKNOWN_ISSUER" on secure websites https://support.cdn.mozilla.net/media/uploads/images/thumbnails/2017-06-07-08-34-22-cb6da3.png

https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
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Since all of your browsers are affected, it may be some external factor such as:

  • security software that filters your web connections
  • "parental control" software that filters your web connections
  • firewall software
  • ISP settings error
  • proxy server settings error
  • private VPN/Hola/TOR settings error