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2.1. Flash - Safari - Set Preferences
"Safari 10 introduces a major change in the way the browser handles plugins. In short, proprietary plugins like Adobe Flash will be disabled by default when browsing the web.... Safari is smart however — it will allow you to enable Flash temporarily on demand." --Mayo, Benjamin. "With Safari 10 on MacOS Sierra, Adobe Flash Will Be Disabled by Default When Browsing the Web." 9to5Mac, 14 June 2016. Web. 30 Aug. 2017.
Open Safari
- Click the Safari menu
- Click Preferences
Safari: Security preferences
- Click the Security icon
- Verify Internet plug-ins: is checked
- Click Plug-in Settings...
3. Adobe Flash Player plug-in
Beware when sites unexpectedly ask you to turn on Flash. If you aren't expecting it, investigate before allowing it.
- Verify Adobe Flash Player is checked.
- Look for the relevant website.
- Choose "On" for websites you trust.
- You might want to change this to Ask.
- Click Done after making your changes.
Close your Safari preferences and try the website again.