How to Fix Windows Internal Error 2337
1. Download .NET Framework. The most common cause of this error is an issue with the .NET Framework. Obtain the most recent version of the software (version 3.5) from Microsoft's website and save it to your computer.
2. Install .NET Framework. Locate the dotNetFx35setup.exe file you downloaded in the previous step. Double click the icon to launch the program and begin installation. Follow the instructions provided by the program and do not change any of the default options.

3. Restart your computer. After the .NET Framework installation completes, you must restart your computer for the changes to take effect. Click the 'Start' button, select 'Shut Down,' then choose 'Restart' and click 'OK.'
4. Run the error-causing program. If Internal Error 2337 no longer appears, you have solved the problem and can stop here. If the error message still exists, you need to uninstall the software generating the error.
5. Access the Windows 'Control Panel.' If reinstalling the .NET Framework does not solve the problem, you will need to remove the flawed software. Begin by clicking the 'Start' button. Move your mouse up and place the cursor over the 'Settings' option, then select 'Control Panel' from the sub-menu.
6. Launch the utility used to remove programs. If you use the Windows XP operating system, look for the 'Control Panel' tool called 'Add or Remove Programs.' If you use Windows Vista or Windows 7, this tool goes by a different name: 'Programs and Features.' Locate the tool that corresponds to your computer's operating system, then double click on the icon to launch it.
7. Remove the program experiencing the Internal Error 2337. Scroll down the list of programs on your screen until you find the name of the program you want to remove. Right click on the name of the program and choose the 'Uninstall' option. Confirm that you wish to uninstall the software and leave the window open until the removal process completes.
8. Request replacement software from the manufacturer. This step is difficult to outline with certainty because policies and practices vary from one company to another. Generally speaking, contact the company's technical support department by phone or through email and explain your situation. They will most likely require you to return the defective disc before mailing you a replacement. This process typically takes four to six weeks.
9. Install the software from the replacement disc. Follow the directions provided in your software's installation guide. After installing the software and restarting your computer, Internal Error 2337 should no longer appear.