Dear YISS Students,

During course registration, you may encounter pop-up error messages on the Yonsei Portal. 

Attached is a list of common errors and how to resolve them. 

Please refer to the attached file before contacting the YISS Office.

Still having issues?

Contact the YISS Office at summer@yonsei.ac.kr with your name, Student ID, a screenshot of the error, and a brief description of the issue.