Typically the RunAs command is used for local authentication, however there is a little known switch which bypasses local authentication and uses it for network authentication only.
This switch allows you to run the Microsoft Dynamics NAV Client, Development Environment, or any other tools as a domain user, from a none domain user pc.
runas.exe /netonly /user:<DOMAIN>\<USER> "C:\Program Files (x86)\Microsoft Dynamics NAV\71\RoleTailored Client\finsql.exe"
For ease of access, it’s also possible to update your shortcuts as appropriate:
Firstly, within the shortcut, amend the target by prefixing with:
runas.exe /netonly /user:<DOMAIN>\<USER>