安裝.net framework 4.0時提示HRESULT 0xc8000222

This behavior may occur if the temporary folder of Windows Update has been corrupted. We can refer to the following steps to rename this folder. Please be assured the folder will be created again when we visit the Windows Update site again.

1. Click Start， Run， type: cmd and press Enter. Please run the following command in the opened window.

net stop WuAuServ

2. Click Start， Run， type: ％windir％ and press Enter.
3. In the opened folder， rename the folder SoftwareDistribution to SDold.
4. Click Start， Run， type: cmd and press Enter.

Please run the following command in the opened window.

net start WuAuServ

首先確定 Windows Update 是否開啟，請選開啟動在試一遍

解決方法 
1.下載以下鏈接地址中的.NET Framework 自動清理工具。在文件下載窗口，單擊“保存”按鈕將文件另外保存(附件里有) 

http://blogs.msdn.com/cfs-file.ashx/__key/CommunityServer-Components-PostAttachments/00-08-90-44-93/dotnetfx_5F00_cleanup_5F00_tool.zip 

2. 雙擊運行 Cleanup_tool.exe 清理工具，彈出確認窗口后，請單擊“是”繼續(xù)。 

3. “Product to cleanup”（清理產(chǎn)品）一項，請在右邊下拉菜單中選擇“.NET Framework - All Versions(...)“（所有版本的.NET Framework），然后單擊“Cleanup Now”(立即清理)繼續(xù)。 

4. 出現(xiàn)“Product cleanup succeeded!”信息后，就表示清理已經(jīng)完成了。按一下“Exit”(退出)關(guān)閉窗口。 

最后，請重啟計算機以重新安裝您所需要的.NET Framework。 

解決方法 2. 
1.運行 cmd 
2.(強制停止 Windows Update )輸入 net stop WuAuServ 
3.進出C:\Windows下把SoftwareDistribution文件夾 直接刪除。 
4.(開啟 Windows Update )繼續(xù)輸入 net start WuAuServ