DevEco Studio3.0下载失败，提示An unknown error occurred

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 【问题描述】
下载OpenHarmony Sdk时报错 eTS下载失败，下载的都失败
下载HarmonyOS Legacy SDK时报错 JS失败
Error: Install JS 3.0.0.1 failed.
Error: Cause: An unknown error occurred.
Solution: Choose Help > Show Log in Explorer to obtain logs, and then choose Help > Contact Support for technical assistance.
Downloading
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【解决方案】
检查一下您系统环境变量的path中是否存在多余的"或;,如果存在的话，麻烦把"或;删除掉。可以点点这里编辑文本，然后把变量名全选复制到文本文档去查找看是否存在"或;

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标签：DevEco,unknown,occurred,JS,失败,Error,下载
来源： https://www.cnblogs.com/developer-huawei/p/16534252.html