Hi there -- I have been using Bitdefender for years now and haven't run into this problem before. My last update for virus protection was 30 January (per the notifications information). When clicking on the Update Now button available on that update recommendation screen, it stays on the 0% screen forever. I have tried on multiple days over the past week, including leaving it up for multiple hours. I did a full system scan with no negative results found. This is on my Windows 10 Dell PC system. I do not see any odd messages in my notifications with regard to any error notifications when attempting to update.
Just to check, I ran the update on my Surface Pro with no problems downloading an update today. I know I have internet on the PC, since I have been working on it all day.
What is recommended as next steps to troubleshoot? Thanks in advance!