Been using Avast for years. Even a week or so ago, Avast did not need a password. This morning it did. I most certainly did not set one, and I am the only one living here. Running W7 Pro. Following the various posts, I booted in safe mode, went to my administrator account, and removed all avast stuff. I even ran awsclear. Then I rebooted. I had been running the purchased pro version, but brought in the free home version. It too wanted a password. Stumped, am I.