Toad – SQLNET Editor and TNS Names Editor Disabled

While trying to connect to a Database using Toad with TNS, Even the TNS entry is created in tnsnames.ora file under Oracle Home\NETWORK\ADMIN

Issue 1: SQLNET Editor and TNS Names Editor Disabled as shown in below snapshot

 Issue 2: Not able to find the TNS Name in the dropdown as shown in below snapshot

Cause: TNS entry missing in the environmental variables

Resolution:  Go to environmental variables and create a new variable Name as “TNS_ADMIN” and set the value as  Oracle Home\NETWORK\ADMIN (as shown in below screen shot )

That’s all, now you will able to  connect to a Database using Toad with TNS.