Is force update good?
"Forcing" is bad if it forces the user to upgrade right now. If the user is in a rush to finish their work, and you hold them up by forcing an upgrade, that's very bad style, especially if the upgrade takes a long time. Pestering the user to update is a bit better.
Do browsers update automatically?
Your Chrome Browser. Chrome updates happen in the background automatically — keeping you running smoothly and securely with the latest features.