(Mods please redirect if appropriate) I am also experiencing the above, I updated the Calibre Container recently, but have never set a user ID or password and it is now asking for a user id and password. Before I deleted and reinstalled Calibre Content Server did have a userid and password and it worked fine (even after the main Calibre started asking for a userid and pass that I don't have) any way to fix this on my end, or is it more a wait until the container gets updated scenario?