IDEA SignatureException: Signature length not correct: got 256 but was expecting 512

使用JetBrains Account**IDEA报错解决方案

问题描述：安装IDEA，使用JB Account**报错：java.security.cert.CertificateException: java.security.SignatureException: Signature length not correct: got 256 but was expecting 512

解决方案：

1. 在IDEA界面依次点击：File -> Settings -> Appearance & Behavior -> System settings -> HTTP Proxy

2. 选择： Auto-detect proxy setting

3. 点击： Clear password

4. 填入URL: https://account.jetbrains.com/login，点击check connection

5. 点击 Help -> Register and login

6.重新输入账号密码**。