How to Fix Windows Phone Link Error Code 256?

Error code 256 surfaced following an update to the Link to Windows app. This error caused connectivity issues between Android devices and desktops. The good news is that Microsoft has addressed this issue after receiving reports from many users. To resolve this issue, simply follow the steps below.

Let’s first update Windows, as an update released on November 27, 2024, specifically Security Intelligence Update for Microsoft Defender Antivirus KB2267602 (Version 1.421.495.0), resolved the error.

To resolve this error, you just have to update Windows:

1. Open Settings on your desktop.
2. Navigate to Windows Update in the left-side panel. If you’re using Windows 10, find Update & Security > Windows Update.
3. Click on Check for Updates and install any available updates.
4. Restart your PC once the updates are applied.

This method should resolve your problem. However, if you’re still facing issues, update the Phone Link App in Windows:

1. Open the Microsoft Store on your Windows desktop.
2. Search for Phone Link by clicking on the search bar.
3. Check for updates to ensure you have the latest version of Phone Link.

Once confirmed that your Windows is up-to-date, you must update the Link to Windows app on your phone too, because the issue often arises due to new security protocols or updates. Microsoft recommends checking for system updates and ensuring everything is up to date, including Windows, applications, and the mobile app from its original store.

1. Open the Galaxy Store or Google Play Store on your tablet/Android.
2. Search for Link to Windows and install any available updates.
3. After updating, restart both your PC and Android device.
4. Ensure that all necessary permissions are enabled for Link to Windows and Link to Windows Service on your Galaxy device. This includes location, microphone, nearby devices, and notifications.
5. Navigate to Settings > Apps > Link to Windows to ensure battery optimization is set to Unrestricted.

Open Link to Windows on your device, sign in if necessary, and use the generated QR code or manually link it with your desktop.

That’s it! The issue with error code 256 should be resolved with these updates, allowing you to resume using the mobile screen projection feature smoothly. If you encounter any further issues, visit us at Appuals.com. Good luck!