If you can connect your device to the adapter, but what you see on your device isn’t visible on your second display, the adapter’s firmware may be out of date.
The Microsoft Wireless Display Adapter app provides settings and firmware updates for the adapter. If you haven’t already done so, install the app from Microsoft Store. For info on how to install the app, go to Use the Microsoft Wireless Display Adapter.
To use the app to update the adapter’s firmware:
Connect your Windows 10 device to the adapter.
Open the Microsoft Wireless Display Adapter app, then select Update & security.
If an update is available, select Update. You'll need to keep the app open and stay connected to the adapter until updates are completed
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