How I Fixed Supabase Storage RLS Errors That the Dashboard UI Couldn't Solve

Short summary

Supabase Storage's dashboard UI fails to apply RLS policies correctly to the storage.objects table, causing 400/403 upload errors. Create policies directly via SQL Editor on storage.objects with proper bucket_id filters instead. Verify with pg_policies query to confirm policies are actually applied.

• •Dashboard UI policies target bucket configuration, not the actual storage.objects RLS table where Supabase checks permissions
• •Use SQL Editor to create INSERT/SELECT/DELETE policies directly on storage.objects for anon and authenticated roles
• •Verify with SELECT FROM pg_policies query to confirm policies exist and will be enforced

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