Sage 50 Error 1020, "Access Denied," typically occurs when there is an issue with user permissions or security settings within the Sage 50 accounting software. This error indicates that the user does not have sufficient privileges to access or perform certain actions within the program.

To resolve Sage 50 Error 1020, consider the following steps:
Run Sage 50 as an Administrator: Right-click on the Sage 50 icon and select "Run as administrator." This ensures that the program has the necessary administrative privileges to function properly.

Check User Permissions: Ensure that the user account you are logged in with has appropriate permissions to access and modify the necessary files and folders within Sage 50. You may need to consult your system administrator or IT department to adjust the user permissions accordingly.

If you continue to experience Sage 50 Error 1020, it's advisable to reach out to Sage 50 support or consult with your IT department for further assistance. They can provide more specific guidance based on your software version and environment.