If you still need to download a Windows Server 2003 ISO, you can try the following options:
: Various retired content and tools for Server 2003 are maintained for historical reference. Risks of Third-Party ISO Downloads windows server 2003 iso download
Host the virtual machine on an isolated host using hypervisors like or VMware Workstation . If you still need to download a Windows
No updates have been released to mitigate vulnerabilities since July 2015. windows server 2003 iso download
: There is no direct "in-place" upgrade path from Server 2003 to modern versions like Server 2019 or 2022. Migration to new hardware is the recommended solution.