I'm receiving the error in the title when trying to access my personal site on the MySite Collection. I can fix this by adding "Full Read" permissions for "Everyone" on the entire web app but I'm not sure if this is secure or a good idea on the web app that hosts the MySite Collection.
With the farm account, I can get onto the site no problem and check permissions for my personal account and see it has no permissions without this setting.
Any ideas?