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Deveco studio3.0 download failed, prompting an unknown error occurred

2022-07-22 14:48:00 【Huawei Developer Forum】

【 Problem description 】
download OpenHarmony Sdk Times wrong eTS Download failed , All downloads failed
download HarmonyOS Legacy SDK Times wrong JS Failure
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

【 Solution 】
Check your system environment variables path Whether there is redundant in " or ;, If it exists , Please put " or ; Delete the . You can click here to edit the text , Then copy all the variable names to the text document to find out whether they exist " or ;