Greetings... On a daily basis, I access a group of websites that use the same username and password for login, so logging into one of the websites automatically enables my access to each of the group websites, as a result of a cookie created by the initial login. As a result, I encounter only one login challenge as I actively access each of the group websites. However, beginning in October, I began to experience repeated login challenges after I had successfully logged into one of the group websites. The repeated login challenges occur randomly whenever I selected a hotlink within the website. The repeated login challenges occur either within the website that I initially logged into or one of the subsequent group websites that I selected to access. The only changes to my Firefox web browser have been the periodic version updates. I have tried making changes to the Firefox Privacy & Security settings, but the repeated login challenges continue. I have also contacted the group websites support and advised them of this problem, but they have been unable to provide any assistance. Could the repeated login challenges be caused by a periodic version update to my Firefox web browser? If not, then what else might be the cause? Thank you in advance for your help!