Even Microsoft can't get their SSL right

Today's fail was brought to you by Microsoft.

Above from https://twitter.com/vanbroup/status/869123089820516352. - Click on the pic.twitter.com link to see the screenshot that makes it all very obvious.

See also

https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/12163379/

It appears only Firefox and Chrome appear to even validate this, but it means that numerous Microsoft systems including Office 365 (Sharepoint Online, Onedrive for Business, Azure and others) simply aren't letting Firefox users in (Because Firefox treats the error as Fatal). Apparently Chrome works-but-regards-as-insecure and IE still works without showing the user anything.

Unfortunately the workaround is to set the security.ssl.enable_ocsp_stapling. to false in about:config in Firefox (disabling the check).

https://answers.microsoft.com/en-us/outlook_com/forum/osecurity-oother/error-when-trying-to-log-in-to-outlook-using/9f8dd00f-e4d8-4984-ac17-ecf85cacbac6

I suppose the trick is getting all those users who implement the workaround to turn the check back on when Microsoft fix it?

Even one of the biggest technology companies in the world can fail at the basics.