hi, we're getting a number of similar reports in the past minutes - this is a misconfiguration on microsoft's server side. if you want to, you can disable OCSP (which is a security mechanism) in the firefox options > advanced > certificates panel until MS will fix the issue.

It appears the Microsoft Hotmail have temporary problems with some of their their servers setup. Either something has gone wrong, or conspiracy theorists may suggest: that MS has decided to encourage people to use MS browsers not open source free ones such as Firefox.

This problem seems to be only affecting certain people. I can still read my hotmail from Firefox but there are mutiple posts about this issue.

I will tag this post with ms-stapling and repeat a solution posted in another thread:

cor-el said: {/questions/1161934#answer-972795}

There seems to be something wrong on some Microsoft servers. Hopefully they fix this quickly on affected servers. This looks like a problem with OCSP stapling on the server because it works when I disable OCSP Stapling in Firefox.

• https://en.wikipedia.org/wiki/OCSP_Stapling
• https://blog.mozilla.org/security/2013/07/29/ocsp-stapling-in-firefox/

You can temporarily toggle this pref to false on the about:config page to see if disabling OCSP Stapling works for you. It is best to reset this pref via the right-click context menu to true once you are done with the this website.

• security.ssl.enable_ocsp_stapling = false

Plrease see also this article explaining how to use about:config

• Configuration Editor for Firefox