Are you using Widevine Widevine 4.10.2209.1 (about:addons -> Plugins) ?
It looks that users get updated to Widevine 4.10.2209.1 and this version isn't compatible with Mac OS X 10.9.
You can try to reinstall the 4.10.1582.2 version
- 1706507 - widevine on every stream website who need DRM
- 1706393 - widevine HBO MAX
- 1706393#c9 - widevine on every stream website who need DRM
I've confirmed that Widevine are no longer supporting older MacOS versions (10.11 is the oldest they currently support).
Sadly, this means we can't do anything on the Mozilla side as the issue is in software we don't control.
(please do not comment in bug reports
https://bugzilla.mozilla.org/page.cgi?id=etiquette.html)
Are you using Widevine Widevine 4.10.2209.1 (about:addons -> Plugins) ?
It looks that users get updated to Widevine 4.10.2209.1 and this version isn't compatible with Mac OS X 10.9.
You can try to reinstall the 4.10.1582.2 version
*chrome://global/content/gmp-sources/widevinecdm.json
*https://redirector.gvt1.com/edgedl/widevine-cdm/4.10.1582.2-mac-x64.zip
*https://www.reddit.com/r/firefox/comments/mn6lqc/widevine_cdm_broken_since_todays_updae/
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*[https://bugzilla.mozilla.org/show_bug.cgi?id=1706507 1706507] - widevine on every stream website who need DRM
*[https://bugzilla.mozilla.org/show_bug.cgi?id=1706393 1706393] - widevine HBO MAX
*1706393#c9 - widevine on every stream website who need DRM
<blockquote>I've confirmed that Widevine are no longer supporting older MacOS versions (10.11 is the oldest they currently support).
Sadly, this means we can't do anything on the Mozilla side as the issue is in software we don't control.</blockquote>
(<i>please do not comment in bug reports<br>https://bugzilla.mozilla.org/page.cgi?id=etiquette.html</i>)
