NTA Re-Opens CUET-UG 2026 Application Window. Final Chance for Aspirants: In a significant update for undergraduate-entrance aspirants, the National Testing Agency (NTA) has announced the re-opening of the Common University Entrance Test (CUET-UG) 2026 online application form. According to the latest notification published on 23 February 2026, students who missed the earlier registration window now have a final opportunity to submit their applications until 26 February 2026.