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{{APIRef("Encrypted Media Extensions")}}{{SecureContext_Header}}
The `load()` method of the {{domxref('MediaKeySession')}} interface returns a {{jsxref('Promise')}} that resolves to a boolean value after loading data for a specified session object.
## Syntax
```js-nolint
load(sessionId)
```
### Parameters
- `sessionId`
- : A unique string generated by the content description module for the current media object and its associated keys or licenses.
### Return value
A {{jsxref('Promise')}} that resolves to a boolean indicating whether the load succeeded or failed.