Solve .NET Framework 4.5, 4.5.1 Issues with this Repair Tool

By: Radu Tyrsina
3 minute read
fix .NET Framework 4.5, 4.5.1

For various PC problems, we recommend this tool.

This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues now in 3 easy steps:

  1. Download this PC Repair Tool rated "Excellent" on TrustPilot.com.
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues with Patended Technologies (requires upgrade).

There are many problems with the  .NET 4.5 and .Net 4.5.1 Frameworks and to help with that, Microsoft has decided to issue an important update to its Repair Tool for that. Read below for more details on this.
net framework repair tool
Microsoft has 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. And now an important update has been released which takes care of issues with these specific versions –  .NET 4.5 Framework and .NET 4.5.1 Framework.

Fix .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.


For various PC problems, we recommend this tool.

This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues now in 3 easy steps:

  1. Download this PC Repair Tool rated "Excellent" on TrustPilot.com.
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues with Patended Technologies (requires upgrade).

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.

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.

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Editor’s Note: This post was originally published in April 2014 and has been since updated for freshness, and accuracy.

For various PC problems, we recommend this tool.

This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues now in 3 easy steps:

  1. Download this PC Repair Tool rated "Excellent" on TrustPilot.com.
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues with Patended Technologies (requires upgrade).

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