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How to fix the 'blocked plugin' error (Mac)

I followed all of the directions on this site - https://www.screensaversplanet.com/help/guides/mac/how-to-fix-the-blocked-plugin-error-45 - but I am still getting the blocked plugin message.

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Melissa7 years agoMac OS X 10.11.6, Safari

5 replies

  • Hello Melissa,

    Thanks for posting. Which screensaver did you install that gives this error? I will check if the same happens for me on a Mac with the same version of OS X you have.

    Rob

    Rob (Screensavers Planet)7 years ago

  • It was the Hubble3D MACScreensaver

    Melissa7 years ago

  • That is indeed a Flash-based screensaver. Please click the Apple icon in the top left of your screen, then "System Preferences", then "Flash Player", and please let me know what it says at the bottom of the window. On my machine it says "NPAPI Plug-in version 25.0.0.127 is installed" and "PPAPI Plug-in is not installed".

    Rob (Screensavers Planet)7 years ago

  • Mine said that and I thought maybe I needed to install the one that was not installed/ So now mine says: NPAPI Plug-in version 25.0.0.127 is installed. and PPAPI Plug-in version 25.0.0.127 is installed. And my Mac is OS X El Capitan Ver. 10.11.6 I cannot update this Mac anymore because Apple thinks it is time I buy a new one apparently.

    Melissa7 years ago

  • Perhaps an out-of-date Flash plug-in has been left behind on your computer. To find out, triple-click the line below or use your mouse to select it:

    /Library/Internet Plug-Ins

    Then right-click the selection, choose "Services", followed by "Open". Are there multiple listings in this folder that contain the phrase "Flash Player" (not "flashplayer")? If so, right-click each, one at a time, and select "Get info", then note that number next to "Version". Find the newest one (25) and delete the others.

    Also see if perhaps the Flash Player plug-in is listed in the "Disabled Plug-ins" folder.

    If that fails, one more thing you could try is revisiting the Flash Player panel in the System Preferences, then click the "Advanced" tab, and then the "Delete All..." button to remove any locally saved settings and storage for the Flash player.

    I hope this helps. Not having the latest macOS version shouldn't be a problem.

    Rob (Screensavers Planet)7 years ago

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