Sharepoint Won't Work with Firefox 86 for Windows
I am still looking for help in seeing if I can use Microsoft Sharepoint with Firefox 86. When I try to log-in, I get a message that says "Working..." followed by a message that says I can't log on to the site and that I need to log-in. I can reach the regular Office portal and the other office apps without an issue.
Suggestions are welcome!
All Replies (3)
I haven't had a chance to check this myself yet.
For you, it worked in Firefox 85 but not in Firefox 86?
Firefox 86 introduced new cookie isolation features. I wonder whether those might be causing the issue? https://blog.mozilla.org/security/2021/02/23/total-cookie-protection/
Normally the best way to track down the exact patch that causes a new program is a tool called Mozregression. It is somewhat time-consuming (and bandwidth-consuming) to run, but hopefully at some point someone can use it to see what exactly broke it. https://mozilla.github.io/mozregression/
Thanks! I admit that I did not check which version it didn't work for. I was able to use Sharepoint in Firefox until around November/December of this year. It's been most of 2021 where I've had an issue.
Hmm, okay, Firefox 85 added a different kind of site isolation, so perhaps that's when the problem began? https://blog.mozilla.org/security/2021/01/26/supercookie-protections/
If we have to roll back to Firefox 84 or 83 or 82, it's hard for me to remember now what changes there were that might have been significant for cross-site authentication.