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How to Fix Minecraft Authentication Servers Are Down Error?

Zubyan is a certified PCHP and Google IT Support Professional. Minecraft: Java Edition can list a server as online, then refuse to join with “Authentication servers are down.” The game cannot verify ...
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How to Fix League of Legends VAN 81 Error?

Zubyan is a certified PCHP and Google IT Support Professional. League of Legends can close with VANGUARD ERROR: VAN -81 even though the Riot Client opens and your internet works. Vanguard, the game’s ...
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Java桌面IM实战：Socket+Swing+MySQL实现私聊群聊与消息持久化

本内容遵循CC 4.0 BY-SA版权协议 简介：本资源是一个基于Java实现的仿QQ即时通讯系统完整项目，面向Java初学者与GUI/网络编程 ...
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JMeter压测常见报错排查指南：环境、内存、网络到脚本逻辑

3.2 Connection refused 目标端口根本不理你 java.net.ConnectException: Connection refused: connect，这个报错字面意思很明确：客户端发起的连接被目标机器拒绝了。 听到这个错误，我一般从下面几个原因排查。 第一，目标服务真的没起来或者没监听对应端口。