I dont use Wordfence or CloudFlare. I have a dedicated server from OVH. I have always used the OVH Debian-Jessie-ispconfig. I have never had any upgrading problems in the past. I am using the same setup for the last 5 years! o_0
I got the same problem with upgrading to WordPress 4.5.1–en_GB!! Also every time I update a plugin WP does not remove the .maintenance file after upgrading
I have now manually installed the 4.5 update. I would still like to know why wordpress is not updating from the dashboard. I have never had this problem before 0_o