The Instructure Community will enter a read-only state on November 22, 2025 as we prepare to migrate to our new Community platform in early December.
Read our blog post for more info about this change.
I am a long time Canvas and Speed Grader user. I use the Chrome browser. As of few days ago (June 22, 2020) the Speed Grader stopped working, and displays a constantly mover buffering icon when Speed Grader is opened. I have not made any changes in my browser for a long time. I cleared my browser of cookies and caches but this did not solve the issues. I am a faculty member with the University of Nevada Las Vegas.
Can you assist please? Thanks, Carl Braunlich
Welcome to the Canvas Community!!!
We have also started to see this intermittently and have open a ticket with Canvas Support. I did get the DocViewer to work by disabling all of the Chrome extensions and then clearing cache. I also got it to work in an incognito window in Chrome.
As a side note, it does seem to be fin in Firefox.
Robbie
What Robbie said is good advice. If it works in incognito mode, then it is likely an extension or cookie issue.
My @kona was complaining yesterday about several things not working.
The first issue was with the document previewer inside Chrome. I saw that she had an ad blocker that was blocking some of the sites that Canvas needed to access. I had her just turn off the ad blocker completely for Canvas and then it started working.
If that didn't work, I would have tried expressly allowing cookies from some of the secondary sites that Canvas uses.
Later in the day, she came back with "it's not working again." This is when I had her go into incognito mode and it worked. Now I strongly suspect it's an extension or cookie issue, especially since it was working in Firefox. We went back into Canvas and I had her disable or remove some of the extensions that she didn't use very often or that weren't well known.
She eliminated / disabled about four of them and we tried it again and Canvas was working again. I had her go back into extensions and enable the one that I was least familiar with and retry and Canvas stopped working. We tried disabling / reenabling it several times and got consistent results. It was definitely an extension that was causing the problem. We left it disabled and she went on her way.
She was lucky to guess the correct extension the first time. What I would have done is enabled half of them and see if the problem still existed. If it was fixed, then I would turn on another half of them (1/4 of the original) until I noticed that it stopped working. Once it was working, I would reverse the process and disable half of the ones that I had just enabled until I found the one that was causing the issues.
Then this morning, she complained that SpeedGrader wasn't working. She went through the process I had initiated yesterday and this time completely removed the offending extension (that she had been using for years) and it started working properly.
I don't know what extensions you have enabled, but her issue was with the Honey extension. Even if you don't have that one installed, the process is what led to a solution.
Thanks so much - this is what I have been experiencing trying to find a
work around. Much appreciated notes.
Best Regards,
Carl Braunlich, Associate Professor
University of Nevada, Las Vegas
College of Hotel Administration
LinkedIn <https://www.linkedin.com/in/carlbraunlich/>
On Thu, Jun 25, 2020 at 10:10 AM james@richland.edu <instructure@jiveon.com>
Around the same time, I experienced the same problem. It is the Adblock extension. I have never had a problem before. I must have had Adblock for years. I was grading and half way through, I was no longer able to see papers in Speedgrader. Just kept buffering. I disabled Adblock and everything works. I added Adblock back and it stops working. There seems to be no way to tell Adblock to exempt speedgrader.
Community helpTo interact with Panda Bot, our automated chatbot, you need to sign up or log in:
Sign inTo interact with Panda Bot, our automated chatbot, you need to sign up or log in:
Sign in
This discussion post is outdated and has been archived. Please use the Community question forums and official documentation for the most current and accurate information.