1、the java-agent and?ACTIVATION_CODE can get from this site:https://zhile.io/2018/08/25/jetbrains-license-server-crack.html
2、delete the fucking folder? ? ?.GoLand2019.3? ? or other product-config if it?exists.The path is?C:\Users\your-computer-name. Example: C:\Users\ww.
3、reopen or reinstall. After that?you will see? this :?
4、click OK ,see :
5、Skip , for?avoiding?trouble .see:
6、choose evaluate for free, click?evaluate , then? click continue.?After that?you will see? this :?
7、do not fucking click?new project or? open project !!!
do not fucking click?new project or? open project !!!
do not fucking click?new project or? open project !!!
click Configure :
8、choose Edit Custom VM Options.. ，fill in the right javaagent path ,then?click save, then exit?
9、?reopen it, Then click Configure , choose ,Manage License...
10、 see this :
10、fill in the right ACTIVATION_CODE which get from?ACTIVATION_CODE.text:
11、 Oh ,fucking it!?congratulations. Have a? joy.
solve License Key is legacy format when use ACTIVATION_CODE activate jetbrains-product 2019.3.1
原文：https://www.cnblogs.com/augustuss/p/12197339.html