If you receive an error when attempting to install Boulevard regarding your operating system, that may indicate that the Windows operating system you are using is no longer supported by Microsoft, therefore, Boulevard cannot be installed.
If you're unsure which operating system your computer has installed, please visit the Microsoft website for further assistance.
We also recommend that you view the System Requirements for Boulevard® as well.
If your computer does meet the current system requirements, to prevent possible issues, you'll also want to ensure that your Windows updates have all been installed before installing Boulevard. See Update Windows on Microsoft's website for further help on checking for Windows updates.