IRCTC website is now migrated to TLS 1.2 which will not be supported by Windows XP and Windows Server 2003 operating system. Hence user who is having these operating system will not be able to access IRCTC website anymore!
TLS 1.2 is not be supported by Windows XP and Windows Server 2003 operating system.Such Users may upgrade their operating systems higher than Windows XP/Server 2003 in order to use IRCTC portal.