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Updated per H2 2025 content audit. Reorganized data into a table, restructured the KB with bullet points removed filler info.

Updated per H2 audit - Reformatted as this article was outdated and included old screenshots and instructions.

Updated per H2 2025 content audit. Removed technical info from the Symantec certificate and intermediate certificate sections for clearer text.

for fx141->fx142? See https://bugzilla.mozilla.org/show_bug.cgi?id=1983123#c9

Updated per H2 2025 content audit. Reorganized the text, moved the first headline right at the top of the KB and turned it into the intro. Added a FAQ section at the end.

Updated per H2 2025 content audit. Reorganized the text, made it easier to follow, with shorter sentences. Added a checklist for users.

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