Fix: Unhandled Exception has Occurred in your Application

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The error “Unhandled exception has occurred in your application” is usually displayed in a Microsoft.NET Framework window and frequently appears when your computer starts up. The error message appears in the following lines:

“Unhandled exception has occurred in your application. If you click Continue, the application will ignore this error and attempt to continue. If you click Quit, the application will close immediately.”

What are the causes of the error “Unhandled exception has occurred in your application” on Windows?

There are several simple causes of this problem, and the problem can be effectively addressed if you are able to detect your scenario based solely on identifying the correct cause. Take a look at the list below:

• Your antivirus may be the culprit – some antivirus programs like Panda Antivirus have caused this problem, so make sure you replace them.
• Some malware or malware may run – If an installed malware or program is running on your computer, you may want to delete it. Make sure to start in a clean start to see if it is the right cause.
• Microsoft.NET Framework installation is incorrect – If the basic files are incorrect, you can try to repair the installation, install a newer version or perform an SFC scan.

Installation or repair of the Microsoft.NET Framework

If the Microsoft.NET Framework 3.5 component is not installed on your computer or is corrupted, the component must be installed or repaired.

To install or repair Microsoft.NET Framework 3.5:

1. Close all open applications.
2. Click the Windows Start button and choose Run.
3. Type the Control in the Open box and click OK. The Control Panel window opens.
4. Double-click on Add/Remove Programs.
5. Browse the list of programs currently installed for Microsoft.NET Framework 3.5 :
6. If the program is not listed, install it:
7. Click here to download it from the Microsoft website.
8. If the program appears in the list, repair it:
9. Select Microsoft.NET Framework 3.5, then click on Modify/Remove.
10. Select Repair, then click on Next.
11. When prompted, restart your computer.

Use the Safe Boot

To use a safe boot option, follow these steps:

1. Restart your computer and press the F8 key on your keyboard. On a computer configured to boot with multiple operating systems, you can press the F8 key when the boot menu appears.
2. Select an option using the arrow keys on the keyboard when the Windows Advanced Options menu appears, then press ENTER.
3. I recommend starting Windows in a clean boot environment to make sure that this problem is not caused by a background program.
4. After starting your computer, check that the problem is solved.

Perform hardware troubleshooting

Any hardware problems can also be the cause of the error. It is therefore very imperative to perform a hardware and device analysis to rule out the possibility that a hardware or device is playing the game somewhere.

1. To identify this hardware, type the following command in the start window and press Enter or click the OK button: %systemroot%\system32\msdt.exe -id DeviceDiagnostic
2. Follow the on-screen instructions to determine if the equipment is defective.
3. Open the Run dialog box as described in the previous section.
4. You can also perform hardware troubleshooting on the Settings page, as shown in the screenshot.

https://www.dell.com/community/Windows-General/Microsoft-NET-Framework-error/td-p/3666540

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