Microsoft no longer provides direct download links for the Visio 2010 installer, even if you have a valid product key.
If you only need to view .vsd or .vsdx files, the official Visio 2010 Viewer is still available for download from Microsoft. download microsoft visio 2010 portable best
Since it no longer receives security updates, using any version of Visio 2010 (portable or installed) can expose your computer to vulnerabilities and malware. Official Alternatives for Viewing and Creating Diagrams Microsoft no longer provides direct download links for