Accounts Comparison provides more information about Sage 50 Error 1603 and how to fix it. Sage 50 Error 1603 is part of the Errors that are caused during the installation of Sage 50 on your system. This is also It is also known as an install defend. If you getting problem and not able to resolve this error, then call sage 1800-942-6705. Visit - https://www.accountscomparison.com/sage-50-error-1603/