The Post Office engaged in a collaborative effort with technology company Fujitsu approximately nineteen years ago to address and resolve issues related to imperfections or bugs within the Horizon IT system. This partnership was aimed at correcting technical faults that impacted postal operations. Recently, claims have been questioned by new evidence, contradicting previous assertions made by the Post Office that system bugs contributed to criminal prosecutions against employees. The emergence of this new information indicates a potential shift in the understanding of the events surrounding the Horizon system errors and the subsequent legal actions. The investigation into this matter is ongoing, with a focus on the technical history of the Horizon system and the role of Fujitsu in addressing operational errors. The findings are significant for understanding the extent of system reliability and the historical context of the legal cases involving postal workers. Analysis of documents and communications from the period reveals that efforts to fix the system predate many of the prosecutions, highlighting the complexity of systemic errors and their impact on justice outcomes. Further review of this collaboration and the technical resolutions implemented is expected to shed light on the accountability and procedural oversight in the system’s management. This case exemplifies the importance of transparent technological troubleshooting processes in public institutions with wide-reaching societal implications.