貼出錯誤代碼，請具有相同錯誤代碼在朋友參考
OS Version = 5.1.2600, Platform 2, Service Pack 3
OS Description = WinXP - x86 Professional Service Pack 3
CommandLine = D:/d6d82a1105eaa9e6c52e05623/d6d82a1105eaa9e6c52e05623/135300x
Using Simultaneous Download and Install mechanism
Operation: Installing
Package Name = Microsoft .NET Framework 4 Client Profile Setup
Package Version = 4.0.303190.0.3199.0. UserControlled
Number of applicable items: 5
Final Result: Installation failed with error code: (0x80070643), "安裝時發生嚴重錯誤" (Elapsed time: 0 00:02:08).
3.按組合鍵win R，打開運行，輸入cmd，回車，在輸入net start wuauserv，回車，即啟動了update的服務；
4.win R，輸入regedit，開啟登錄檔，依序展開至HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Internet Explorer/
，再在左則右鍵下main，權限，所有使用者權限設定為完全控制，如下圖：
