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Workaround RubyGems' SSL errors on Ruby for Windows (RubyInstaller).

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PP7h
Last edited Jan 16, 2015
Created on Jan 16, 2015

This example presents a step-by-step guide for resolving SSL certificate verification failures in RubyGems on Windows, specifically for RubyInstaller users. It shows the transition from the obsolete bundled CA certificate to a SHA-2 upgraded replacement, affecting RubyGems versions 1.8, 2.0, and 2.2. The document details manual installation of official update packages (e.g., 1.8.30, 2.0.15, 2.2.3) via the `gem install --local` command, followed by `update_rubygems`. It also links to relevant GitHub commits and issue discussions, rendering the historical context and fix through a Markdown-formatted gist.

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