The file size upload limit for a File resource isn’t a single fixed number — it’s controlled by multiple layers, and the lowest limit always wins.
1️⃣ Site-level limit (hard ceiling) - This is the absolute maximum for the whole LMS site.
Nothing anywhere can exceed this value
2️⃣ Course-level limit - This can only be equal to or lower than the site-level limit.
3️⃣ Activity-level limit (File resource) - This is the most common “final indicative setting” — even if the site allows large files, this setting can silently restrict uploads.