Common Visual Basic (VBA) issues on Windows 11 with Excel 365 include problems with macro security, code compatibility, and corrupted installations. To troubleshoot, check macro settings in Excel's Trust Center, ensure Excel and Windows are fully updated, and verify that the "Trust access to the VBA project object model" setting is enabled. For external data connections like Oracle, update or reinstall ODBC drivers, and for persistent problems, consider rolling back recent Office updates or seeking a support ticket. Initial troubleshooting steps Update and restart: Ensure both Windows 11 and Excel 365 are fully updated, as recent updates can fix compatibility issues. Restart your computer afterward. Check macro security settings: Navigate to File > Options > Trust Center > Trust Center Settings > Macro Settings. Make sure "Trust access to the VBA project object model" is checked to resolve issues with VBA accessing other objects. Check for update issues: A recent September 2024 Office update is known to cause issues with VBA. If the problem started after an update, you may need to roll back to a previous version. This involves disabling updates, opening the command prompt as an administrator, and running specific commands to revert the update. Specific issues and solutions This video demonstrates how to fix issues with macro security settings in Excel: (copy link and paste to your browser) https://www.youtube.com/watch?v=BiwUzO6VmlU&t=33s Code incompatibility: Older VBA code might not be compatible with newer Windows 11 and Excel versions.Check Microsoft's VBA Compatibility List for your specific setup and consider rewriting or updating the code. External data access: If you're having trouble connecting to a database like Oracle, the issue could be with the Oracle ODBC drivers. Ensure you have the latest version installed. You may also need to check that the "Trust access to the VBA project object model" setting is enabled. Corrupted installation: Sometimes, issues can arise from a corrupted Office installation. Try running a quick repair or an online repair through the Office apps' "Account" settings. The "online repair" option requires an internet connection but is more thorough. This video shows how to perform a quick and online repair for Office 365 issues:(copy link and paste to your browser) https://www.youtube.com/watch?v=oQuDR4y4K8M&t=59s VBA Editor/Panes: If you cannot see the VBA code window or the panes are not docking correctly, try undocking and then redocking the Project Explorer and Properties windows. You can also try going to View > Reset Window Layout in the VBA editor. This video demonstrates how to fix VBA panes that are not docking correctly:(copy link and paste to your browser) https://www.youtube.com/watch?v=C4T9CDfVA5g&t=29s Other considerations File-specific issues: If the problem occurs with only one file, make a copy of it. If the issue persists with the copy, the original file might be corrupted. Admin privileges: If you are using a work account, it's possible that your IT administrator has disabled certain features or requires elevated privileges. You may need to contact your IT department for assistance.