Background: Before COVID-19, people with intellectual disabilities were digitally excluded, facing difficulties accessing and using technology. The pandemic outbreak closed down many in-person services and supports for this population. Methods: This study examined changes in technology use to support the healthcare and social connections of older adults with intellectual disability in Ireland (n = 682) during COVID-19. Decision tree analyses explored factors associated with using technology for health and social connection; and to explore relationships between technology use and subjective outcomes of stress/anxiety and of positives during this period. Findings: Technology use for healthcare and social connection increased during COVID-19, but not enough to make up for the loss of in-person care/connection. Residence type was associated with increased use of technology for healthcare utilisation, with the highest rates among community group home residents and the lowest among those in independent/family settings. Increased technology use to speak with both family and friends was associated with prior digital skills and digital access. Increased technology use was significantly associated with both positive and negative experiences during the pandemic. Conclusions: The COVID-19 pandemic offered an opportunity for increased digital connection for older adults with intellectual disabilities, but not all benefitted. Those with prior skills, available supports, and the greatest need to connect were more likely to enhance their use of technology. The complexity of the COVID-19 period, including the general impact on mental health and well-being, means that the role technology played in supporting quality of life and mitigating stress/anxiety needs further and longer-term investigation.