The following bug has been logged on the website:
Bug reference: 14419
Logged by: jari kopponen
Email address: jari(dot)kopponen(at)patria(dot)fi
PostgreSQL version: 9.4.4
Operating system: Windows 7 Professional, 64 bit SP 1
Description:
After we installed kb3177467 (Servicing stack update for Windows 7 SP1 and
Windows Server 2008 R2 SP1: September 20, 2016) windows update, we faced
problems with database connections. In postgresql there is log entries
"could not reserve shared memory region (addr:xxx) for child(yyy): error
code 487. This seems to be quite similar problem than described in : BUG
#14050.