Firefox Community Forum

I'm using Firefox v126. I'm searching through the add-ons trying to find a few that I like and most don't work with my older version of Firefox. So I click into the version history of the add-on and find an older version of the add-on that will work with the version of Firefox I am running. Except... I click it and I get:

"The add-on downloaded from this site could not be installed because it appears to be corrupt."

say what? ok maybe a fluke, so I click on through, older version, older version, still old version. All give me the same error. Okay, maybe its just the add-on, no, its literally any older version of any add-on.

No way all those versions of add-ons are "corrupt." I can download the .xpi, rename to .zip and view the contents. Anyone run into this particular problem before and if so, how did you fix it? I'm keen to keep v126 of Firefox and would like to use the add-ons that I like to work with it.

I've been using MAC (multi-account containers) for a few months. Awesome feature, especially useful for logging into multiple email accounts in the same tenant (M365, GW, etc). In the recent past, if I had an issue with a particular login, I could go to the Firefox Multi-Account Containers extension button on the top bar, click on it...then Manage Containers, select the container to manage, there was a set of options, one of them being "Clear Cookies and Site Data" (or similarly worded). That would clear the data for that MAC which would resolve my issue. Now. that option is no longer shown when clicking the Manage Containers button. I've included a snapshot of what is shown now.

The ability to clear the data for that particular MAC is invaluable. How can I get that back?

MacOS (26.3.1 a). Firefox 150.0 (aarch64)

P.S. I just found the "Report" option on the extension itself in the Extension settings. I will post this message there as well.

LThibx