There are a number of work-arounds being discussed in the community.For everyone else, we are working to ship a more permanent solution. If it’s possible for you to receive the hotfix, you should get it by 6am EDT, 24 hours after it was first released. Rather than using work-arounds, which can lead to issues later on, we strongly recommend that you continue to wait. Some users are reporting that they do not have the “hotfix-update-xpi-signing-intermediate-bug-1548973” study active in “about:studies”.More information about the remaining issues can be found by clicking on the links to the release notes above.
There are remaining issues that we are actively working to resolve, but we wanted to get this fix out before Monday to lessen the impact of disabled add-ons before the start of the week.
This release repairs the certificate chain to re-enable web extensions, themes, search engines, and language packs that had been disabled (Bug 1549061).
We’re continuing to work on a fix for older versions of Firefox, and will update this post and on social media as we have more information. An update to ESR 60.6.3 is also available as of 16:00 UTC May 8th. You’ll get an update notification within 24 hours, or you can initiate an update manually.
If you are running Firefox versions 47 – 56: install this extension to resolve the expired security certificate issue and re-enable extensions and themes.If you are running Firefox versions 57 – 60: Install this extension to resolve the expired security certificate issue and re-enable extensions and themes.If you are running Firefox versions 61 – 65 and 1) did not receive the deployed fix and 2) do not want to update to the current version (which includes the permanent fix): Install this extension to resolve the expired security certificate issue and re-enable extensions and themes.Updates – Last updated 14:35 PST May 14, 2019.