Unable to select the Oracle instant client from the login dropdown list (4240248)

The Install or Upgrade Repository wizard login window is unable to detect the Oracle instant client home installed on the machine.

Windows Registry Disclaimer:

Quest does not provide support for problems that arise from improper modification of the registry. The Windows registry contains information critical to your computer and applications. Make sure you back up the registry before modifying it. For more information on the Windows Registry Editor and how to back up and restore it, refer to Microsoft Article ID 256986 "Description of the Microsoft Windows registry": http://support.microsoft.com/default.aspx?kbid=256986.

1. Start | Run | regedit

2. Locate the following Key:
   
   For 32-bit machines: HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE
   For 64-bit machines: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\ORACLE

3. Right click on ORACLE node and click on New | Key | Name the new key KEY_OraClient11g_home1

4. Right click on new key KEY_Oraclient11g_home1 and click New | String | Create the following values specific to your environment:
   
   ORACLE_HOME instantclient_11_2
   ORACLE_HOME_NAME OraClient11g_home1
   TNS_ADMIN c:\instantclient_11_2\network\admin
   NLS_LANG AMERICAN_AMERICA.UTF8

5. Navigate to your instant client folder (e.g. instantclient_11_2) and create the following empty directories:
   
   C:\instantclient_11_2\bin
   C:\instantclient_11_2\vc8
   C:\instantclient_11_2\vc9

6. Ensure that the instant client directory (c:\instantclient_11_2) is in the PATH environment variable.