Answer
ArcGIS Desktop and ArcInfo Workstation 9.3 require the 9.3 License Manager. ArcGIS 9.3 cannot consume licenses served from earlier 9.x versions of the ArcGIS License Manager.
Licenses served by the 9.3 License Manager are backward compatible and can be consumed by ArcGIS Desktop and ArcInfo Workstation versions 9.0, 9.1, 9.2, and 9.3.
Article ID:000010158
Software:
- Legacy Products
- ArcMap 9 x