Firefox 142.0.1 on Windows 10 displays page with video but 115.27.0esr (64-bit) on Windows 7 does not
I am taking a course on Coursera, and while the video lessons are viewable on my W10 box running Firefox 142.0.1 (64-bit), on my W7 box running Firefox 115.27.0esr (64-bit) the Coursera page, after briefly displaying the lesson's home page, which includes the normal video playback window, reports "This page encountered an error." I have contacted Coursera, to no avail, and now seek advice from you all. I suppose I can not return on my W7 box to the normal Firefox non-esr releases, but was something changed therein of late that would cause this? It all worked well in July, but now won't work at all. You likely can not access the page without being a registered student, but just in case, the URL is https://www.coursera.org/learn/html/lecture/d6Pha/accessible-web
Arthur
All Replies (4)
One thought would be to try turning off Tracking Protection on the page. Look for the shield icon toward the left end of the address bar. Click the icon to drop a panel and then click the blue slider switch to store a site exception. See: Enhanced Tracking Protection in Firefox for desktop.
You also could try this: right-click the video player area (or Shift+right-click to override any context menu shenanigans), expand "This Frame" and then click Open Frame in New Tab. Any difference?
Turning off the tracking protection did not solve the problem. I am not sure exactly what the "video player area" is, but I tried right-click and shift+right-click in a couple of screen locations but still goot the "Oops! Something went wrong." error message. Would the Web developer tools at Ctrl-Shift-I be helpful/informative? I used them in a different Coursera class to see various things via the Inspector and Network tabs. I see differences on the Console tab from box to box, but I wouldn't know what to look for.
I have a workaround--I can view the course material on the W10 box, but as an engineer this bugs me.
Any additional thoughts on this issue? Thanks for your input thus far. Arthur
The video player area usually is a rectangle in the page where the video would appear, or an error message. But sometimes if a video doesn't load, it collapses to zero height and you can't right-click it.
You definitely can check the console for error messages (Ctrl+Shift+K).
In the dev tools, on the Network tab, do you notice anything blocked (either from Firefox's side, or with a server status code of some kind)?
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