I encountered this issue this morning while trying to update to 30.7.48. Looking at the error message it says 'all users of this machine' - which is what I selected. I tried again and selected install only on my account and it installed immediately.
I get that far, open an office app and try to sign in and it cannot verify my community domain. I removed all previous saved logins and tried to create new and still nothing. Has anyone encountered this issue before? I've never had this problem.