Hello Team, Hope you are doing well. I just installed Thunderbird email client and have imported my Yahoo Mail account into thunderbird. Further, add-ons TbSync and Provider for Exchange ActiveSync have been installed too. However, I cannot add yahoo calendar. I have tried creating New Calendar and proceeded up to the steps - "On the Network ; paste yahoo calendar URL etc and the bottleneck seems to be yahoo credentials are not accepted. Please help. Also is there a way to combine my hotmail, yahoo and gmail calendars into "one" Thunderbird calendar? I am not sure if calendar events from the 3 email providers are comprehensively included in my view today. Appreciate your guidance on this too! Many Thanks, Amlesh