Zoho service desk: Can't Login to Zoho service desk
Zoho service desk: Can't Login to Zoho service desk
A possible solution can be found here -
https://help.zoho.com/portal/en/kb/writer/writer-troubleshooting-tips/articles/how-can-i-enable-cookies-in-my-browser-26-11-2018-1#Mozilla_Firefox
Note: tickets can still be submitted without login into Zoho service desk.