I have started using Oracle database server on Windows 7 64 bit OS and I have encountered the following error.
\"Error- Windows cannot find \'http://127.0.01:%HT
This article works for me: https://orlandoolguin.wordpress.com/2012/06/10/configuracion-de-apex-en-oracle-11g/
Maybe you need unlock the anonymous account to start Apex. Use this code on cmd:
C:\oracle\product\11.2.0\db_1>sqlplus / as sysdba
SQL> alter user anonymous account unlock;
User altered.
If doesn't work, you can try previous steps defined on the article.
I hope you solve this issue.