Till now there is no official tool from Microsoft to fix .NET Framework installation problems, we’ve covered .Net framework Cleanup tool in the past (that’s not from Microsoft) lets you troubleshoot issues with .NET framework installations on your Computer. Today Microsoft has released Microsoft .NET Framework Repair Tool which fixes some common issues faced by users with the setup of or with updates to .NET framework on their systems.
Fix .NET Framework Installation Issues with .NET Framework Repair Tool from Microsoft
The Microsoft .NET Framework repair tool detects and tries to fix some frequently occurring issues with the setup of or with updates to the Microsoft .NET Framework. Additionally, this tool tries to resolve these issues by applying known fixes or by repairing the installed product. The tool can also be used to repair corrupted Microsoft .NET Framework 4 installations. This includes Microsoft .NET Framework 4 language packs.
If you’re experiencing issues related to .NET Framework on your Computer, then all you need to do is download and save this tool to your hard drive and run it. This tool may make changes to installed .NET framework with your consent like “correct the state of Windows Installer on the computer, reset the DACLs on certain folders, or resolve some issues that are related to invalid or corrupted update registration”.
This tool follows four steps: troubleshoots the issue, applies the fixes with user consent, tries to repair .NET framework 4 and then collects logs at the end with user consent.
Coming to the fourth step, if this tool fails to resolve installation issue on your Computer, then it may send .cab file that contains logs to Microsoft, which you can avoid by clicking the ‘Cancel’ button.
Update: Current version of .NET Framework Repair tool corrects setup problems with .NET Framework 4, .NET Framework 4.5 and .NET Framework 4.5.1 on Windows XP SP3/Vista/7.
You can read more details about this tool here and you can download the tool from here.