在重装了系统后每次打开都弹窗口，试了好几种方式都没解决。

Unity is running with Administrator privileges, which isnot supported. Unity executes scripts and binarylibraries in your project that may originate from thirdparty sources and potentially be harmful to yourcomputer. Unity may also execute scripts and binarylibraries that are still under development and not yetfully tested. Running Unity with Administrator privilegesmay lead to catastrophic consequences, including butnot limited to accidental data loss, change of globalsystem settings or even bricking your device.

最终尝试了这个方法链接终于解决了这个问题。

1.右键Unity Hub快捷方式

2.将runas /savecred /user:2205放到目标上

runas /savecred /user:2205

2205是我的普通用户名称。

3.双击快捷方式，会弹出cmd，输入一次账号密码就行了。