The Canada Revenue Agency (CRA)'s NETFILE service goes down for maintenance overnight for about 3 hours. The time of the outage varies depending on your time zone. You can get more information from this CRA page:
https://www.canada.ca/en/revenue-agency/services/e-services/e-services-individuals/netfile-overview/...If you’re still having problems when filing when NETFILE is open, please post the exact message you're receiving when trying to submit your return so we may better assist you.
If you have TurboTax Live Assist & Review, here is how to talk to a Tax Expert:
https://turbotax.community.intuit.ca/community/navigating-turbotax/help/i-m-using-turbotax-live-assi...
