Duolingo maintenance breaks are typically short, often lasting anywhere from about 15 minutes to under an hour. Reports and monitoring data show durations varying from around 14 minutes to nearly 3 hours in some rare cases, but most commonly maintenance breaks and outages last between 15 and 47 minutes. Users have noted that these breaks are usually quick and meant to improve the service, though occasional longer interruptions due to external issues can happen. Duolingo usually does not provide detailed official acknowledgments for these brief maintenance periods. For users, this means that if you encounter a maintenance break, it is best to wait about half an hour or less before the service resumes. Having features like streak freeze available helps protect progress during these interruptions. If the break extends longer than an hour, it might relate to larger technical issues beyond routine maintenance. In summary, Duolingo maintenance breaks are normally under one hour, commonly around 15 to 45 minutes, allowing most users to return to their lessons fairly quickly after a brief wait.