WSUS的0×80190194错误
最近WSUS不太正常，看本地的log，有一段：
2008-09-03 07:11:21:555 872 224 Misc WARNING: WinHttp: SendRequestToServerForFileInformation failed with 0x80190194
2008-09-03 07:11:21:555 872 224 Misc WARNING: WinHttp: ShouldFileBeDownloaded failed with 0x80190194
2008-09-03 07:11:21:555 872 224 Misc WARNING: DownloadFileInternal failed for http://update.nau.edu.cn/selfupdate/wuident.cab: error 0x80190194
2008-09-03 07:11:21:555 872 224 Setup FATAL: IsUpdateRequired failed with error 0x80244019
注意红色部分。
查看IIS的虚拟目录，selfupdate果然没有了...
解决方法：
Open the IIS Manager console
Drill down to the Default Web Site, right click it and select New -> Virtual Directory
For the alias use Selfupdate and for the path point to the Selfupdate directory. It should be something like C:\Program Files\Update Services\Selfupdate.
Forward through the wizard selecting all the defaults.