Installing the. NET Framework 4 Failure solution

When you recently installed a tool software, you are prompted to install the. Net Framework 4 first.  During the. NET FWK 4 installation, you are prompted that the. NET Framework 4 Client profile is not installed. Go to the program and function of the Control Panel to view this already installed. Delete and reinstall, which is still the tip, after several methods have been tried on the search, this method is feasible, related to the Windows Update Service, recorded for later use.

Windows7 Flagship edition

1, start-> run->net stop WuAuServ
2, start-> run->%windir%
3, rename the folder SoftwareDistribution to Sdold or any other name////wuauserv is your system Automatic update service; SoftwareDistribution is the folder where the update temp files are stored.
4, start-> run->net start WuAuServ

If you can't rename it, restart the computer and rename it. and then reload it. NET4 can be installed.

If none of the above methods can be installed. net4.0, you may also have net residue in your computer is not completely deleted successfully, the reference to the steps will be able to complete.
First download the Net Repair tool:
http://www.microsoft.com/en-us/download/details.aspx?id=30135
If not repaired, download net Cleanup tool: http://www.cr173.com/soft/6158.html

After cleaning up, download separately:. NET 1.0,. NET 1.1 Service Pack,. NET 3.5 and Net 4.0