Installing Pro Tools 10.3.10 on macOS High Sierra (10.13) is officially unsupported by Avid, as the software was only qualified up to OS X 10.8.5. If you attempt a standard installation, you will likely encounter an "incompatible version of the OS" error.
Rating: 4/5
Installer Block: The installer will typically fail on High Sierra with an "Incompatible version of the OS" error. install pro tools 103 10 on high sierra
Third-Party Patchers: Scripts or "modified" installers found in community forums sometimes bypass OS checks, though these are not recommended for professional production environments. Recommended Alternatives Installing Pro Tools 10
It runs, but it’s not stable for critical paid sessions. Occasional random quits and graphic glitches (especially with large sessions). Fine for recalling old projects or light tracking. For daily work, stay on Sierra (10.12.6) or use PT 12/202x. You need to open a session from 2014–2016
Pro Tools 10 is a 32-bit application.
macOS High Sierra is the last macOS version that can run 32-bit apps (macOS Mojave and later dropped them entirely).
However, Avid only officially supports Pro Tools 10 up to OS X 10.8.5 (Mountain Lion).