Removing the Widevine Media Optimizer pop-up window

From today’s mail bag

I keep getting a pop-up window prompting me to update Widevine Media Optimizer. The only options are to click either the Later or Update button. There are no dropdown menus or choices associated with this message. I don’t know what this is and I can’t find it on my computer. In addition, the logo in the message appears blurry, so I’m concerned this may be some kind of malware. I searched online and it seems like there are mixed comments about it. I’d love to get rid of this pop-up display, but can’t figure out how. Can you help?


As noted on this web page, Widevine Media Optimizer lets you watch DRM video on your computer. The pop-up window may have been triggered from installing an Amazon app to view their videos.

All Mac OS X browsers (whether you’re using Chrome, FireFox, or Safari) share the same plugin installation. Close and quit all browser windows. Using the Finder, navigate to the Internet Plug-Ins folder.

TIP: If you’re running Lion (10.7) or Mountain Lion (10.8), hold down the Option key while selecting Go from the Finder menu bar to display the hidden Library folder.

To prevent this pop-up window from displaying on your Mac, move the following file and folder to the Trash:

/Library/Internet Plug-Ins/WidevineMediaOptimizer.plugin
/Library/Internet Plug-Ins/WidevineMediaOptimizer

Afterward, empty the Trash and restart your Mac.



Filed under Apple Software, Mail Bag, Third Party Software, Troubleshooting, Viruses and Spam

9 responses to “Removing the Widevine Media Optimizer pop-up window

  1. Coin

    I don’t know how to stop the Update popup for Widevine Media Optimizer without removing the actual plugin. But I did manage to compose an Applescript that quits the window and removes a temporary file to the trash. I found out the WMO updater pops up every hour, with this script setup as an FolderAction you will notice sometimes that the popup appears but then magically disappears after 2 or 3 seconds. Other times you won’t notice, don’t know why.
    Only on rare occasions the script is not triggered right and you have to click the “Later” button yourself. And once in a while empty the trash…
    Don’t know much about Applescript so there might be a better way to do it, but for now this does the trick.
    Use at your own risk, you know that, don’t you?

    Here is what you do:
    – Find the Applescript-editor in the Utilities folder in your Applications folder and open a window.
    – copy paste the script below into that window and compile the script by clicking the button that looks like a hammer.
    – save the script as “script” and name it something like “kill Widevine popup” or whatever name that makes sense to you.
    – save it to the folder where actions are stored, usually named “Folder Action Scripts” (it might be named different in other languages) on the startupdisk /Library/Scripts/Folder Action Scripts
    – after saving go back to the Finder (if you’re not already there) and under “Go” on the menubar find “Go to Folder”
    – in the window that shows after you select “Go to Folder” type “/private/tmp” (without the quotation marks)
    – right click on the folder “tmp” and choose “Configure FolderActions”
    – from the popup menu select the script you just saved
    Close all windows and get back to work. If all’s well the Widevine popup will be closed, quitted and trashed by the script from now on.

    on adding folder items to this_folder after receiving these_items
    tell application “Finder”
    set currentProcesses to get the name of every process
    if currentProcesses contains “Widevine Media Optimizer” then
    tell application “System Events”
    tell process “Widevine Media Optimizer”
    click button “Later” of window 1
    end tell
    end tell
    end if
    end tell
    tell application “Finder”
    set WidevineMediaOptimizerFolder to every folder of folder “:private:tmp” of startup disk whose name begins with “KSInstallAction”
    move WidevineMediaOptimizerFolder to trash
    end tell
    end adding folder items to
    <TO HERE

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