Database Installation Guide Oracle Database Postinstallation Tasks Configuring Oracle Components Windows Authentication No Longer Uses NTLM by Default Windows Authentication No Longer Uses NTLM by Default Date: August 2023 Related Topics Upgrade Your Database Now - ORA-12638 on Windows only from Oracle 19.10.0 onwards Windows : While Connect to Database Getting ORA-12638 After Applying Jan 2021 WINDBBP 19.10.0.0.210119 On Windows 64/32 Bit Database Client (Doc ID 2757734.1) Parent topic: Configuring Oracle Components