title: PostgreSQL pg_ctl register error under Windows 7
body: <p>Under Windows 7, PostgreSQL 9.3.2, I'm trying to register as a service a second instance of PostgreSQL on the same server, using a different port number and data directory. The 2nd cluster was successfully created with the initdb command, under C:\Program Files\PostgreSQL\9.3\data2.</p>
  
  <p>When I run the following pg_ctl register command from C:\Program Files\PostgreSQL\9.3\bin, I get an error message:</p>
  
  <pre><code>pg_ctl register -N postgresql9.2_2nd_cluster -U "NT AUTHORITY\NetworkService" -D "C:\Program Files\PostgreSQL\9.3\data2" -S auto -o "-p 5431"
  
  pg_ctl: could not open service manager
  </code></pre>
  
  <p>I googled this, but without much success.</p>