HT201581: Find your Mac's serial number in About This Mac or System Information
Learn about Find your Mac's serial number in About This Mac or System Information
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Helpful answers
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Dec 3, 2015 5:10 AM in response to stevejobsfan0123by juliettafromnicosia,There are no extensions...
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Dec 3, 2015 7:27 AM in response to juliettafromnicosiaby ChitlinsCC,Your Joy when starting up your Mac in Safe Mode indicates a NON-Apple cause for the issue
It is hard to imagine both Chrome & Safari behaving the same way without some common add-on being the issue.
To test this, as I said earlier, I would download Mozilla Firefox and try the SAME actions that are failing in Chrome and Safari
go here and follow the instructions > https://www.mozilla.org/en-US/firefox/products/
The buttons to which your refer are JavaScript controlled. YouTube subscribe button source code:
<div class="primary-header-upper-section-block">
<div class="primary-header-actions">
<span class="channel-header-subscription-button-container yt-uix-button-subscription-container with-preferences"><button data-subscription-id="xp3Kf0YtN38j37t3xvzf5Qc-ogAPjlUBuhe3DAVhzCs" data-is-subscribed="true" class="yt-uix-button yt-uix-button-size-default yt-uix-button-has-icon no-icon-markup yt-uix-subscription-button yt-can-buffer yt-uix-button-subscribed-branded hover-enabled" type="button" onclick=";return false;" aria-busy="false" aria-live="polite" aria-role="button" data-clicktracking="ei=915gVumuNcHVuQLCtbbIDA&ved=COEBEJsr&feature=channels4" data-channel-external-id="UC3bdIln4tahJJZe-SRTJFZQ" data-style-type="branded"><span class="yt-uix-button-content"><span class="subscribe-label" aria-label="Subscribe">Subscribe</span><span class="subscribed-label" aria-label="Unsubscribe">Subscribed</span><span class="unsubscribe-label" aria-label="Unsubscribe">Unsubscribe</span></span></button><button class="yt-uix-button yt-uix-button-size-default yt-uix-button-default yt-uix-button-empty yt-uix-button-has-icon yt-uix-subscription-preferences-button" type="button" onclick=";return false;" aria-busy="false" aria-label="Subscription preferences" aria-live="polite" aria-role="button" data-channel-external-id="UC3bdIln4tahJJZe-SRTJFZQ"><span class="yt-uix-button-icon-wrapper"><span class="yt-uix-button-icon yt-uix-button-icon-subscription-preferences yt-sprite"></span></span></button><span aria-labelledby="yt-uix-tooltip48-arialabel" data-tooltip-text="3,673" class="yt-subscription-button-subscriber-count-branded-horizontal subscribed yt-uix-tooltip" title="3,673" tabindex="0" aria-label="3,673 subscribers">3,673</span> <span class="yt-subscription-button-disabled-mask" title=""></span>
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Dec 3, 2015 10:49 AM in response to juliettafromnicosiaby Eric Root,Try running this program and then copy and paste the output in a reply. The program was created by Etresoft, a frequent contributor. Please use copy and paste as screen shots can be hard to read.