The existing wave of improvement in manufacturing industry is strongly driven by the application of digital technologies. Unfortunately, the implementation process is not straightforward. To understand the barriers which hinder a smooth implementation process is essential for successful implementation of digital technologies. Our study aims to identify the major barriers based on a case study performed at six Norwegian manufacturing companies, to know what to solve enabling a smoother implementation process. The findings shows that both technical and organizational aspects are of importance to consider, where the organizational aspects are seen as the most underestimated. The lack of digital competence alongside underestimated need for organizational development of involved people emerges as prominent barriers. Some technical problems were also pertinent, like system integration. Sharing of data was seen as a potential asset, but both legal, strategic and technical issues hampered this. The results of this study may help managers and practitioners to address the major barriers highlighted, paving the way for successful implementation and integration of digital technologies in the manufacturing industry.