PostgreSQL on Windows fails to start - 'could not create shared memory segment'

Question

PostgreSQL 9.4 & 9.5 (beta) on my Windows 7 laptop fails to start. In the Windows event log I see the following error:

2015年11月10日 13:53:49 IST FATAL: could not create shared memory segment "Global/PostgreSQL.851401618": Permission denied

It was working before for a long time, and suddenly it stopped.

I tried to uninstall and install, without any luck.

dynamic_shared_memory_type is set to windows.

Answer 1

_{Community Wiki answer generated from question comments by a_horse_with_no_name}

Try setting dynamic_shared_memory_type = none in postgresql.conf.

"Permission denied" seems to indicate that the permissions for the user under which the service runs have been changed.