How to Disable the Windows 10 ‘Let apps sync with my devices’ Option

The Silent Cross-Device Bridge

In Windows 10, Microsoft introduced deep integration between your PC and external hardware to create a seamless ecosystem. To facilitate this, they created the “Let apps sync with my devices” privacy setting. When enabled, this feature allows Universal Windows Platform (UWP) apps from the Microsoft Store to automatically discover and synchronize data with paired devices (such as smartwatches, fitness trackers, IoT home appliances, and even other PCs on the network) via Bluetooth, Wi-Fi Direct, or the local network, often without explicitly asking for permission on a per-device basis.

While this is incredibly convenient if you use a dedicated companion app to sync your daily step count from a wearable to your desktop dashboard, it is a massive privacy loophole if left globally enabled. A rogue or overly aggressive app could silently poll your local network or Bluetooth stack, indexing the smart devices you own and attempting to extract or inject data. If you prefer to manually manage how and when your PC interacts with external hardware, and you do not want random Store apps acting as a bridge to your IoT devices, you should disable this setting system-wide.

How to Block Device Synchronization

You can instantly prevent all Microsoft Store applications from automatically syncing with your paired hardware via the Privacy settings.

1. Click the Start button and select the Settings gear icon (or press Win + I).
2. Click on the Privacy category.
3. Look at the left-hand sidebar, scroll down to the “App permissions” section, and click on Other devices.
4. In the right-hand pane, look for the text Communicate with unpaired devices (often linked to the sync functionality) or the specific Let apps sync with my devices master toggle, depending on your specific Windows 10 build version.
5. Click the toggle switch to turn it Off.

Once disabled, Windows will sever the automatic sync bridge. Applications will be forced to rely on standard, explicit pairing dialogues or standard file transfers rather than silently exchanging data with your peripherals in the background.