KB articles about blocklisted MS add-ons
October 21st, 2009 by Chris IliasOver the weekend, there was quite a bit of activity regarding security issues in .NET Framework Assistant and Windows Presentation Foundation. These are add-ons that were installed via Windows Update for a majority of Windows users. Mike Shaver did a great job of summarizing what happened and why those MS add-ons were temporary blocklisted here.
Given the number of people with these add-ons on their system who would be notified by Firefox, we anticipated that users would come to Firefox Support with questions about the blocklist.

Indeed, since October 15th, “windows presentation foundation” and “blocklist” are the top recent gaining search terms.
For this issue, we already had an article about the add-ons blocklist, and a mention of the .NET Framework Assistant in an article about uninstalling add-ons. To accommodate the increase in search traffic about the recently blocklisted items, we created 2 new articles (1 for each MS add-on), and expanded the add-ons blocklist article.
If you come across any users asking for more information about these blocklisted items and how to enable or disable them, you can direct him/her to these articles:
October 21st, 2009 at 4:12 pm
It would be good if clicking on “More information” didn’t lead to a security error due to an invalid certificate…
October 21st, 2009 at 6:02 pm
Thanks for posting these articles. Is FIREFOX going to let us know when they ENABLE the add-ons? It would be only fair.
October 22nd, 2009 at 12:11 pm
I don’t know if you will get a notification, but when the blocklist is updated, the add-on will be automatically re-enabled.