The default settings of Firefox 39.0 is not compatible with the HKU Portal. If you need to access email service only, you may go to http://webmail.hku.hk for webmail service.
You are suggested to use IE or other browsers to login HKU Portal at the moment. If you want to use Firefox 39, the following steps will change the settings to bypass the security warning message:
- In FireFox, enter "about:config" in the URL field and press enter.
- Accept the "This might void your warranty!" warning.
- In the search field at the top, enter "security.ssl3.dhe".
- Double click each result to toggle the Value to "false".