The Court of Appeal has recently interpreted that the Ontario Regulation for Maintenance Standards only mandates that a landlord remove snow from outside communal areas of a residential complex not from places that are utilized only by individual tenants. However, when there are shared spaces, it remains the landlord’s responsibility. The case can be found here: https://www.canlii.org/en/on/onca/doc/2024/2024onca459/2024onca459.html
You should speak with a legal service provider to ensure that your rental unit and lease agreement align with the facts of the Crete v. Ottawa Community Housing Corporation case.