The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/9.6/static/pgupgrade.html
Description:
In set 9. Run pg_upgrade:
It says that windows users should execute this:
RUNAS /USER:postgres "CMD.EXE"
This step does not work unless you create a user called postgres in windows
user management.
Furthermore, the instructions that follow do not work unless you:
1. Add the user to the administrators user group.
2. Give "full control" permission to the postgresql data folders on both the
old and new installations.
I have also found that it is easier to add localhost with "trust" in the
pg_hba.conf while you do the upgrade. Once completed, remove it again.
