Fix CLR Error: 80004005 The program will now terminate

Last Updated on November 11, 2020



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CLR error on your computer is a fatal error that can prevent your computer from starting properly and prevent many applications from starting. One of the most common CLR errors is the “CLR error 80004005” that occurs on Windows systems during the boot process. This error usually occurs when multiple .NET Framework is installed on the system at the same time. Although there may be two or more .NET Framework running on a system at the same time, some have compatibility issues. To fix the CLR error, multiple platforms must be uninstalled and properly reinstalled.

Reinstall .Net Framework

This error indicates a corrupted .NET 2.0 installation. To check, you can download and run the .NET Check Tool and check .NET version 2.0 to make sure it doesn’t work.

If the .NET 2.0 check fails, the solution is to uninstall and reinstall .NET. If there are later versions of .NET (i.e. 3.0 or 3.5), you will need to remove .NET from the later version to 2.0. Then restart and try ACT! Reinstall. Once upon a time ACT! installed, you can reinstall any later versions of .NET that have been removed.



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Remove .NET

install_net_framework
  • From the Start menu select Control Panel.
  • Double click “Software” (or “Programs and Features” in Windows Vista / 7).
  • Uninstall all versions of .NET 2.0 and newer. Start by installing the most recent version. For example, uninstall .NET 3.5, then .NET 3.0, then .NET 2.0.

Repair Windows Update

  • Download the Easy Fix app.
  • Then run the application and select the Run aggressive options check box (not recommended).
  • Click Continue.
  • Follow the information on the screen to complete the fix.
  • Additional procedures are described in the documentation provided here.
  • Reboot your computer.

The next step is to update with Windows Update. Open Windows Update and check for updates again. Install the .NET Framework via Windows Update. Run the app to see if the problem is resolved. If the problem persists, a visit to a technician is also recommended.



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