Today while performing Windows Update,Three computers showed 80072EFD,Restarting didn't help,And every time I clicked 'Check for updates',The error would appear in less than 20 seconds,But using online update worked fine。

依照微軟說明,80072EFD這個錯誤代碼是指”ERROR_INTERNET_CANNOT_CONNECT”,表示連不到更新伺服器,幾經測試,其中兩台不能連是因為機碼中的WSUS Server路徑有誤,另外一台則是DNS沒設好,所以解析不到WSUS Server的IP,因此若有遇到此錯誤代碼的情形,不妨可從此著手。
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