security risk

When you encounter the message "Microsoft has blocked macros from running because the source of the file is untrusted" in Microsoft Access, it indicates that the file you are trying to open has been identified as coming from an untrusted source. To resolve this issue, you can follow these steps:

1. Unblock the File: Right-click on the file, select Properties, and in the General tab, look for an Unblock checkbox. Check this box and click OK. This will remove the Mark of the Web from the file, allowing macros to run.
2. Change Security Settings: If you need to run macros frequently from files downloaded from the internet, consider adjusting your macro settings. You can do this by going to File > Options > Trust Center > Trust Center Settings > Macro Settings. Here, you can choose to enable macros with notification or disable all macros except digitally signed ones.
3. Use Group Policy: If you are in an organizational environment, your IT department may have policies in place that block macros from running. You can ask them to enable the policy that allows macros from trusted locations or to add the location of your file as a trusted location.
4. PowerShell Unblock Command: If you are comfortable using PowerShell, you can also use the Unblock-File cmdlet to remove the ZoneId value from the file, which allows macros to run by default.

By following these steps, you should be able to enable macros in your Microsoft Access file.