Phone link error 256 with S22 Ultra

Anonymous
2024-11-20T07:36:00+00:00

I have had Phone link working for years with my Samsung Galaxy S22 ultra.

Recently, part of the functionality stopped working, specifically, the "open phone screen" part. I keep getting an error 256.

The phone is on Wifi, connected to a Ubiquiti NanoHD.

The PC is a desktop on 10 Gbps ethernet.

Both are in the same /24 subnet, using DHCP with IP reservations in the router.

The phone says it's connected to the PC. The PC says the phone is connected to it.

I can see the phone's text messages & photos on the PC.

I just can't open the phone screen on my PC, or show any app on my PC's screen.

Windows for home | Windows 10 | Connect Phone and PC

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  1. Anonymous
    2024-11-22T19:08:15+00:00

    Link to Windows is developed by Microsoft. Both the Windows side and the Android side. It just happens to be bundled with Samsung phones, and you can't uninstall it. However, you can roll it back to the original factory version. I did just that.

    I linked my phone again. And then got this :

    So, it looks like the protocol is not stable and they require both sides to be the same version. SMH.

    Seems like one would need to roll back the version of the app on the Windows side, too to get it working again.

    I'm not sure how to do that. It's possible to uninstall Phone link on the Windows side, but I just don't know where to download the older revision.

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  2. Anonymous
    2024-11-22T19:15:10+00:00

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  3. Anonymous
    2024-11-22T20:13:56+00:00

    Thanks !

    On a Win11 box, I rolled back the Windows app to 1.24032.156.0 .

    On the smartphone, the factory version of the app is 1.24032.529.0 .

    Unfortunately, the problem remains the same when trying to mirror the screen - error 256 .

    It looks like there is a 3rd component to this, which is indeed developed by Samsung, called the Link to Windows service, rather than app. It says the last update is from October 28, 2024 though.

    Not sure if it's possible to rollback that one to an earlier version.

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  4. Anonymous
    2024-11-22T20:20:56+00:00

    At this point I'm wondering if it's even a client app regression. Phone link uses cloud servers for device discovery. It could be a regression on those servers that somehow only affects the screen mirroring/app case. Microsoft operates those servers .

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  5. Anonymous
    2024-11-22T21:19:18+00:00

    Same issue here with my Samsung 21FE ---- and Surface laptop

    Used to work with no issues

    Reinstalled latest Link app on Windows and cleared caches on Android

    The PC sees the phone but I can;t activate any App from the PC - Error 256

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