You must log into Windows 10 with an administrator account.
Press the , type Environment Variables , and select Edit the system environment variables . Click Environment Variables at the bottom right. Under System Variables , click New and add: Variable name: TNS_ADMIN
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If successful, you will be connected to the Oracle database. Troubleshooting & Tips
If the installer warns that Windows 10 is not supported, click "Yes" to continue. You must log into Windows 10 with an administrator account
Installs everything needed to run applications (recommended for most users). Custom: Allows individual component selection. Select Runtime or Administrator and click Next . Step 3: Specify Installation Locations
If successful, you will see a message ending with OK (xx msec) . This indicates that your network configuration is correct and the client can reach the database host. Under System Variables , click New and add:
For production environments on Windows 10, test the connection thoroughly. Where possible, upgrade your database and client to Oracle 19c or higher.
Click "Sign In" (use your Oracle account). If you don’t have one, registration is free and fast.