msiexec /i ClassicClient_6.3.12_x64.msi /quiet /norestart
ADDLOCAL=Core,LegacyPlugins INSTALLDIR="D:\ClassicClient"
Cause: Hardware cursor conflict with modern GPU drivers. Fix: Run the client in Windowed mode (Fullscreen=0) or enable Software Cursor in the config.
If you want, I can convert this into a user-story backlog, wireframe suggestions, or a tech task breakdown (developer tickets). classic client 6.3.12 for 64 bits
Related search terms (for further research): I'll generate suggestions now. msiexec /i ClassicClient_6