I have resolved this by adding an inst_loc registry entry:

HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE.

How to create the entry in registry :

1. Open registry
2. Go to HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE
3. Create a new key with name Oracle (if it does not exist)
4. Go to Oracle and then create a new String Value with name "inst_loc"
5. For example : Give the value as "C:\Program Files (x86)\Oracle\Inventory"

Source: https://forums.oracle.com/ords/apexds/post/hkey-local-machine-software-oracle-does-not-contain-entry-f-8712