C: \ Windows \ System32 \ drivers \ etc \ hosts Open this file as an administrator, to add two lines:
0.0.0.0 account.jetbrains.com
0.0.0.0 www.jetbrains.com
Reopen the IDEA, and if prompted to enter registration code, visit:
http://idea.lanyus.com/getkey?userName=lan+yu
The registration code and paste it on the line. What userName URL parameters that fill all the same to return. Before pasting the need to break the routine, throwing a Jar package, overwrite two files, reference: https://blog.csdn.net/u011961421/article/details/78539048?locationNum=5&fps=1