Toronto hospital network declares 'Code Grey' after Microsoft outage hits email

Unity Health Toronto, which includes St. Michael’s Hospital, declared a “Code Grey” due to a global Microsoft outage disrupting its email services. The hospital network confirmed patient care remains unaffected and its facilities stay open. The Code Grey signals a loss or failure of infrastructure, with staff currently unable to send or receive emails. Unity Health advised those with urgent appointment needs to call the main hospital line, while monitoring the situation as Microsoft works on restoration. Several Toronto post-secondary institutions, including the University of Toronto, Seneca Polytechnic, and George Brown Polytechnic, also reported email impacts, though classes appear unaffected. Microsoft began investigating the issue around 1 p.m. Thursday and continues posting updates on recovery efforts.