Information Systems (IS) success is one of critical achievements of organizations for it has high impact on the business operation. Information is a key asset of any company; the success of the Information system management will also determine the success at the corporate level. And ERP is the application to manage and process this information that runs in the business operations. Enterprise resource planning (ERP) system is a set of integrated software modules with a central database that enables a company to manage and control the use of its information resources. The benefit of implemented ERP system to an organization needs to be known and measured so that appropriate & timely measures can be taken for performance improvement. rnThis research investigates the post-implementation success status of ERP at HBSC by adopting Delone and Mcleanâ€™s updated IS success model as a theoretical research model for assessment. Based on the six success dimensions from model construct, a set of research Hypothesis were formulated to be tested using the quantitative data that is collected from the active ERP users of HBSC. rnThe target population are 135 active users, the researcher chose to census over sampling and sent the questionnaire to all users using online survey application. 68 participants (50%) respond to the survey. An exploratory quantitative research approach was applied, and the collected data was analyzed using statistical Package for Social Sciences (SPSS V23) software. Based on the collected response reliability test was done using Cronbach's Alpha test and the results shows high reliability of all used measures, where Cronbach's Alpha exceeds 0.7. Hypothesis embedded in the research model were tested using correlation, regression, and stepwise multiple regression analysis. rnThe Finding of the study indicates the Pearson coefficient correlation analysis test provides empirical support for the existence of a positive and significant association between the dimensions of ERP success model to some extent. The result of Stepwise regression shows that Information quality, System Use and Net Benefit explain 55.7% of the variance occurs in User satisfaction. The determinants of User satisfaction explain 20.7% of the variance in System Use, and the determinants of User Satisfaction explains 37.9% of the variance in the Net benefits. The study result indicates Information Quality, System use, User satisfaction and Net benefit have a significant positive influence on the ERP success at HBSC. rnThis study followed quantitative approach to identify the most determinant ERP success factors which are derived from the conceptual model based on the updated McLean and Deleonâ€™s IS success model undergoes empirical testing on the Hypothesis formulated. The researcher recommends that the Habesha Breweries S.C management consider improvement on the identified determinant success factors for better ERP system utilization. Furthermore, practical implications to HBSC, and future studies were highlighted.