Download Microsoft .Net Framework repair tool to fix issues

Radu Tyrsina
by Radu Tyrsina
CEO & Founder
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  • NET Framework is a software framework installed on Windows computers that supports the interoperability across various programming languages used on the OS.
  • Windows computers are often affected by .NET Framework issues, and it seems that the 4.5 and 4.5.1 Framework versions are more prone to issues and errors.
  • Fortunately, Microsoft rolled out a dedicated .NET Framework Repair Tool that users can utilize to fix common 4.5 and 4.5.1 .NET Framework issues. In this guide, we'll show you where you can download the too from and how to use it.
  • This guide is part of our .NET Framework hub. Feel free to visit it for more useful tips.
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There are many problems with the  .NET 4.5 and .Net 4.5.1 Frameworks and to help with that, Microsoft decided to issue an important update to its Repair Tool for that. Read below for more details on this.
net framework repair tool
Microsoft released the official .NET Framework Repair Tool in order to help users easily fix and solve annoying issues and problems with their .Net Framework versions.

Thanks to a specific update, the tool takes care of the issues affecting the following versions –  .NET 4.5 Framework and .NET 4.5.1 Framework.

Troubleshoot .NET Framework issues using these solutions

You can download the .NET Framework Repair Tool directly from Microsoft’s servers in order to fix NET Framework 4.5, 4.5.1 problems for good.

The Repair Tool can only address MSI-installed updates of the .NET Framework from 3.5 SP1 to 4.5.1, and comes with a really small size of less than one megabyte.

Also, it won’t affect the version which came pre-installed with your Windows install. And here’s the official changelog for all the changes:

Quiet mode and Passive mode support through command line is added for the tool. Now, the tool does not require you to only run in UI mode. Therefore, the task can be automated. The tool now supports the .NET Framework 4.5 and the .NET Framework 4.5.1. Therefore, fixing and repairing are also applicable for these products.
A new, optional command line switch is added to enable the repair of specific .NET Framework versions to override the repair of other installed versions at the same time.
The Repair Tool-generated log file can now be optionally saved in a user-specified location by using a command line option. This new option overrides the default location, which is the current user’s desktop in UI mode and %temp% folder in Quiet/Passive mode.

Note: We recommend that you save logs to a specified location by using this option to run the tool in Quiet or Passive mode. A new option lets you run the Repair Tool in Log Collection Only mode without applying any fixes or repairs. The option provides the flexibility to collect and investigate logs before you apply actual fixes. New, optional support is added to let you opt out of any data collection in Quiet or Passive mode. Software updates improve tool stability and fix other causes of .NET Framework setup failures.

Albeit the utility is aimed at IT professionals and developers and those who are tech-savvy, the average user can make use of this tool as these problems are affecting all of us.

Run a System Scan to discover potential errors

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Run a PC Scan with Restoro Repair Tool to find errors causing security problems and slowdowns. After the scan is complete, the repair process will replace damaged files with fresh Windows files and components.

If the repairer failed to fix your NET Framework issues, you can also run DISM. Go ahead and launch Command Prompt as an administrator and then enter the command listed below hitting Enter after each one:

  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • Dism /Online /Cleanup-Image /RestoreHealth

If nothing worked and you’re still experiencing technical issues, then the safest approach is to uninstall .NET Framework 4.5 and .NET Framework 4.5.1.

  1. Go to Control PanelPrograms and Featuresprograms and features control panel
  2. Select Turn Windows features on or off
  3. Locate .NET Framework 5.5 and uncheck it
  4. Wait for the operation to finish and then restart your computer.
  5. Follow the same steps to install NET Framework.

Let us know if you managed to fix the NET Framework 4.5 issues that you encountered using the solutions above.

FAQ: Learn more about .NET Framework

  • Is .NET 4.5 installed?

To check if NET. Framework 4.5 is installed on your computer, open the Registry and follow this path: HKEY_LOCAL_MACHINESOFTWAREMicrosoftNET Framework SetupNDPv4Full. If you can’t find the Full key, this means that .NET Framework 4.5 or above is not installed.

  • What does the .NET Framework do?

NET Framework ensures the interoperability of different programming languages. The framework also allows Microsoft to develop run apps and services based on .NET technologies.

  • Is .NET Framework 4.5 backward compatible?

NET Framework 4.5 and newer versions are all backward compatible with the apps built on earlier Framework versions. However, some older apps may require a special configuration file to run on new Framework versions.

Editor’s Note: This post was originally published in August 2018 and has been updated for freshness, and accuracy.

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Editor's Note: This article was originally published in April 2014 and was revamped and updated in May 2020 for freshness, accuracy, and comprehensiveness.