Corporate education in international organizations faces a lot of challenges which are hoped to be addressed by using blended learning concepts. However, the heterogeneity of an international workforce in terms of culture and learning style opposes this objective. Therefore, this research-in-progress paper focuses on cultural and learning style impacts on learning success when using blended learning in organizations. Based on first theoretical ideas of a blended learning success model the impact of national culture and learning style on learning outcome is theorized and analyzed using an empirical study conducted with 81 employees of an international organization. The results reveal that national culture has an impact on blended learning success and therefore a cultural sensitive design of blended learning environments is necessary. The results are the basis for further research to develop a blended learning success model including cultural and learning style aspects as it is described in the paper.