Hello,
I have nearly the same Problem. If I want to update the plugin from 4.4.3 to 4.4.5 it always “crashes” at the extracting message.
Waiting for hours before refreshing the backend didn´t help. After refreshing the backend, the Warning Message “An automated wordpress update has failed to complete – please attempt the update again now” appears.
WordPress 4 on a Apache Server.
Anyone any advice?
Thanks.