亲试，可用。

转自：http://blog.csdn.net/liuyiting2000/article/details/7866936

安装.net framework 4.0，报 0xc8000247错误
原文是：.NET Framework 4.0安装未成功，原因是HRESULT 0xc8000247

用谷歌百度搜了一圈，居然中文版的网页里就没一个靠谱的方案能解决这个问题，我了个去。

不禁悲从中来，只好上国外网站上晃荡一圈，结果人家第一个页面就出现了解决方案。虽然也很多不靠谱，但至少有一个能用的啊。链接如下：

http://answers.microsoft.com/en-us/windows/forum/windows_7-windows_update/error-code-0xc8000247-cant-install-updates/198166df-9549-e011-8dfc-68b599b31bf5

这个页面的第三个回复，能够解决此问题

原文就不翻译了，说说大意吧：到http://h10025.www1.hp.com/ewfrf/wc/document?docname=c02219204&lc=en&cc=uk&destPage=document&dlc=en&product=

去下载个intel 的快速存储支持程序，装好，就能解决这个问题。

原因很明显，当然是你机器上现有版本的interl快速存储支持程序有问题。

感谢这个不知名的老外。

原文：
I too kept getting the same error code 0xc8000247, although on Windows Vista 32 bit. 
Any microsoft download, did not work. Defender updates, Windows updates, Internet Explorer, Windows
Media Player and more.
These problems all seem to coincide with the time I upgraded my hard drive from a 160gb to a 500gb.
I used Acronis True Image to clone my original HDD and I appeared to have no issues. However after a while I notice I hadn't got any updates for defender. When investigating, I noticed the automatic updates I'd set up weren't working either. 
After weeks and weeks of trawling forum after forum, trying different downloads, registry fixes, and loads of other stuff I eventually came across this
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c02219204&lc=en&cc=uk&destPage=document&dlc=en&product=
It updates the Intel Rapid Storage Technology Driver (IRRT). 
It does specify in the link that it is Western Digital drives, so not sure if this is the link for you, but I am sure that the
Intel Driver is the cause of your problem.

Hope it helps.