System.AccessViolationException when accessing Bank Feeds

Thank you for turning to the Community about your bank feeds concerns, JLSP. 

I can see how this error impedes you from using online banking seamlessly. Let's manually fix the .NET Framework to get you back on track.

QuickBooks utilizes the .NET Framework to run its interface programs smoothly. In the event of any issues with the .NET Framework, the desktop program may not function properly. 

When you're ready, let's work together to resolve the error. Here's how:

1. Close all open programs.
2. Open the Windows Start menu and type Control Panel in the search field.
3. Open Control Panel and head to Programs and Features.
4. Choose Uninstall a Program. Please note that we're not uninstalling anything.
5. Select Turn Windows features on or off and look for .NET Framework on the list.

Next, review the settings for both .NET Framework 4.5 (or later) and .NET Framework 3.5 SP1. For detailed instructions, check out this article: Manually fix Microsoft .NET Framework errors. Head directly to the Check NET Framework 4.5 (or later) section and continue up to Check NET Framework 3.5 SP1.

If you come across an error when turning the .NET Framework on or off, I advise contacting Microsoft or IT personnel to determine if the issue is caused by your operating system.

I've added a link that contains solutions to resolve Microsoft .NET Framework, MSXML, and C++ issues: System Exception errors. 

Furthermore, you can utilize these resources to troubleshoot any errors you encounter while working in QuickBooks, particularly the online banking feature:

• Fix OL and OLSU Bank Feeds errors in QuickBooks Desktop
• Unexpected error when you refresh a Bank Feeds account in QuickBooks Desktop
• Fix common problems and errors with the QuickBooks Desktop Tool Hub

If you have any further questions or need additional assistance with troubleshooting online banking errors and other QuickBooks concerns, feel free to leave a comment below. I'll do my best to respond promptly and assist you further. Take care, JLSP.