This post has been updated YET AGAIN, which makes this rev 5!
Since this post is still getting a lot of traffic, here is a PSA. Pidgin has just released version 2.7.7, which completely fixes the MSN certificate issue, enables multiple MSN logins, and fixes the AIM SSL Handshake Failure error. You should go download it now.
I launched Pidgin this morning to discover that Microsoft’s instant messaging (what is called this week? Live? Undead? MSX?) had changed something which threw Pidgin a curve ball. The error message is “The certificate for omega.contacts.msn.com could not be validated. The certificate chain presented is invalid.”
It seems the certificate that Microsoft uses to secure access to your buddy list was updated with new wildcard certificates and that there is an issue with the intermediate CAs referenced in the chain. The fine folks at Pidgin have released a new version, 2.7.7 which incorporates these new intermediate CAs, and fixes some other stuff, and you should upgrade immediately.
Download and install Pidgin 2.7.7, available now!Download Pidgin2.7.7 for Windows
Disregard any previous directions from this, or any other blog. The problem is that the new wildcard certs that MSFT is using have a problem with the intermediate certificate authority referenced in the chain. The latest release of Pidgin, 2.7.7, incorporates these and takes care of some other stuff, including now supporting multiple logins to MSN.
With many thanks to the developers at Pidgin.im, and to Stu Tomlinson for providing the proper fix pre-2.7.6.
STOP! Apparently you followed a link to the #more anchor on my blog, and are totally missing the updated content advising you to update to the latest version of Pidgin 2.7.7! Scroll up, or just Download Pidgin2.7.7 for Windows!
We now return you to your regular workday, already in progress.
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