你好，
1. 请问你第一次安装WSUS， 还是在重新安装WSUS?
2. 如果是第一次安装就出现问题的话，请去下面相关的日志中查看安装出错时的error code,一遍做进一步分析：
WSUSSetup.log (the summary log)
WSUSSetupMsi_timestamp.log (the verbose MSI log)
WSUSCA_timestamp.log (the custom actions log)
WSUSWyukonSetup_timestamp.log (the Database installation log)
https://docs.microsoft.com/zh-cn/archive/blogs/sus/troubleshooting-the-wsus-installation-process
3. 如果你是重新安装WSUS的话，请确保之前的WSUS相关组件被彻底卸载了：
a. Remove WSUS server role in server manager;
b. Check IIS, ensure the WSUS site is removed;
c. Delete WSUS content and SUSDB, if you use WID, then, you may install SQL server management studio to ensure the SUSDB is removed.
可以参考下面这篇帖子：
https://social.technet.microsoft.com/Forums/ie/en-US/356a702e-eacc-4a27-8c63-48e6113dba90/wsus-server-2008-r2-installation-failed?forum=winserverwsus
感谢您的时间，如果需要进一步帮助的话，欢迎反馈。
Best Regards,
Anne
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