When you encounter this issue, you’ll receive the error message along the following lines; An alternative error message you could see is: Unhandled exception has occurred in your application. If you click Continue, the application will ignore this error and attempt to continue. If you dick Quit, the application will close immediately. Invalid class. You may encounter this issue due to one or more of the following reasons;
Your antivirus may be the culprit.Certain programs or malware may be running.Microsoft .NET Framework installation is corrupt.Script debugging is enabled via Registry.Access violation in Msvcr92.dll.Deleting the Ubisoft launcher registry key.System file corruption.
Unhandled exception has occurred in your application
If you’re faced with this issue, you can try our recommended solutions below in no particular order and see if that helps to resolve the Unhandled exception has occurred in your application issue on your Windows 11/10 device. Let’s take a look at the description of the process involved concerning each of the listed solutions. Before you try the solutions below, check for updates and install any available bits on your Windows 11/10 device and see if the error reappears when you launch the program or boot your system as the case may be. Also run a full system AV scan with Windows Defender or any reputable third-party AV product to disinfect and remove virus/malware that might be the cause of the issue in view.
1] Enable .NET Framework
As the error prompt points to .NET Framework, this solution requires you to make sure .NET Framework is enabled on your Windows 11/10 computer, and then check if the Unhandled exception has occurred in your application issue on your device is resolved. Otherwise, try the next solution.
2] Install latest version of .NET Framework
Assuming you already have .NET Framework enabled on your system but the error keeps reappearing, you can download and install the latest version of .NET Framework with admin privilege on your Windows 11/10 device – and if you’re having issues installing .NET Framework on your device, see the post on how to troubleshoot .NET Framework Installation Issues.
3] Run .NET Framework Repair Tool
This solution of running .NET Framework Repair Tool follows in the event that enabling and installing the latest version of .NET Framework on your Windows 11/10 PC wasn’t able to resolve the issue in hand.
4] Perform SFC and DISM scan
If you have system file errors, you may encounter the error in view. The SFC/DISM is a utility in Windows that allows users to scan for corruptions in Windows system files and restore corrupted files. This solution require you run SFC scan and in the event this operation didn’t resolve the issue at hand, you can run DISM scan or try the next solution.
5] Troubleshoot in Clean Boot state
If there are any third-party application or process that is interfering with the normal performance of the .NET Framework installed and running on your Windows 11/10 PC, this problem may occur. In this case, you can troubleshoot in Clean Boot state and see if the issue at hand is resolved. Otherwise, try the next solution.
6] Disable/Uninstall 3rd-party security software (if applicable)
Most third-party security software are all known to cause this particular issue. In this case, to fix this issue, you’ll have to remove all third-party antivirus programs from your PC using the dedicated AV removal tool to remove all files associated with your antivirus program. If removing the antivirus fixes this error, you can now install the same antivirus again, or you can switch to an alternative software or better still stick to Windows 11/10 native AV program – Windows Defender.
7] Modify Registry – Delete Ubisoft Launcher key (if applicable)
You may encounter this issue when you try to launch applications like Uplay, Internet Explorer, some older incompatible games designed for earlier versions of Windows. And as investigation reveals, the issue in hand seems to be a widespread issue on Windows 11/10, especially among users that have both Steam and Uplay installed at the same time. In this case, to resolve the issue, you need to delete the registry entry associated with the Uplay launcher – this supposedly eliminates the conflict, allowing both applications to function properly under the same machine. Do the following: Since this is a registry operation, it is recommended that you back up the registry or create a system restore point as necessary precautionary measures. Once done, you can proceed as follows:
Press Windows key + R to invoke the Run dialog.In the Run dialog box, type regedit and hit Enter to open Registry Editor.Navigate or jump to the registry key path below:
At the location, on the right pane, right-click the Launcher entry and select Delete.
If you get an error while deleting the registry key on your Windows 11/10 system, you can take ownership of the registry key and try the delete operation again.
Once deleted, exit Registry Editor.Restart PC.
On boot, check if the error is fixed. If not, try the next solution.
8] Reset Internet Options
Open Internet Options and click on the Restore advanced settings button. Next, if you’re running Windows 10 on your device and faced with this issue, you can reset Internet Explorer to default settings and see if that helps. As IE is deprecated on Windows 11, this solution applies to just Windows 10 PC users.
9] Disable Script Debugging (if applicable)
Here as well, this solution applies to only Windows 10 PC users. as you may encounter the issue with Internet Explorer on a machine that has Visual Studio installed on the device, and Script Debugging is enabled and the registry entries end up containing corrupted data. In this case, to resolve the issue in hand, you need to disable Script Debugging and then delete the associated registry keys. After you must have disabled script debugging by following the instructions in the guide on how to Fix Long-Running Script error on Internet Explorer 11, you can proceed to delete the associated registry keys on your Windows 10 device – here’s how:
Back up the registry or create a system restore point.Open Registry Editor.Depending on your system architecture, navigate or jump to the registry key path below:
For 32-bit users For 64-bit users
At the location, on the right pane, right-click on the Debugger key, and click Delete.
Next, jump to the registry key path below:
For 32-bit users For 64-bit users
At the location, on the right pane, right-click on the DbgManagedDebugger key, and click Delete.
Exit Registry Editor.Restart PC.
That’s it! Related post: Unhandled Exception Access Violation error
How do I fix Unhandled server error?
If you have encountered the unhandled server error in MLB The Show 21 on your gaming device, you can try the following suggestions to fix the error:
Check to see if there is server maintenance.Reboot the game.Restart the console or PC.Check network connection.
What is an Unhandled server exception?
For gamers that are receiving the Unhandled Server Exception error message on their gaming device, the error means that your connection to the MLB The Show 21 servers has been disconnected, and consequently you are unable to make use of any online functionalities in the game like online multiplayer or Diamond Dynasty.
