Running Office 2003 Pro on a modern 64-bit OS is not flawless. Be aware of the following:
MSOP2003 includes all the programs you'll ever need but it's a great package and worth the upgrade price of $329 Information Today, Inc. Microsoft Office 2003 Pro Full 64 Bit
Outlook 2003 cannot connect to Microsoft 365 Exchange Online without modern authentication. It also struggles with IMAP and modern SSL/TLS ciphers. You will likely get constant password prompts. Running Office 2003 Pro on a modern 64-bit
To understand why people still want this software, one must appreciate its significance. Released on August 19, 2003, Microsoft Office 2003 was the successor to Office XP and the predecessor to the widely panned Office 2007 (which introduced the controversial "Ribbon" interface). It also struggles with IMAP and modern SSL/TLS ciphers
This article is for informational purposes only. You are responsible for complying with all applicable software licensing laws and cybersecurity best practices. Microsoft does not endorse or support the use of Office 2003 in production environments.