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SEC_ERROR_UNKNOWN_ISSUER

  • 2 回覆
  • 1 有這個問題
  • 159 次檢視
  • 最近回覆由 FredMcD

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So far I get the following error only when trying to go to

Https://www.Google.com  ""SEC_ERROR_UNKNOWN_ISSUER" and it will not let me add an exception .
附加的畫面擷圖

所有回覆 (2)

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Hi, please try : uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:\Program Files , C:\Program Files(x86) & C:\ProgramData Then restart system. Then run Windows Disk Cleanup. (Note: This should be Pinned and run Weekly, If never done below expect 10's of gig's) Then run it again and click the button that says Cleanup System Files. Note: your Firefox Profile is saved. But you should make a back up before you do :

Reinstall with Current Release Firefox 59.0.2 with a Full Version Installer

Please let us know if this solved your issue or if need further assistance.

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