Desktop and Laptop lose sharing

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  1. Posts : 45
    Windows 10 64 bit
       #1

    Desktop and Laptop lose sharing


    I have two Windows 10 machines: a desktop running 1909 18363.657 and a laptop running 1909 18363.592. If both machines are re-started at the same time, the machines can share files and the laptop can print to the printer connected to the desktop. But, when I close the lid on the laptop and it goes to sleep, the network connection between the two is lost. That makes sense to me. But, when I open the laptop and it returns from sleep, the network connection is not re-established. Is there a way to re-connect the two machines other than re-starting each one of them?
      My Computer

  2. dalchina's Avatar
    Posts : 30,094
    Win 10 Pro (1903)
       #2

    Hi, this is a common experience and there are numerous threads reporting the same inconsistency. Please feel free to search the forum for such theads.

    You might try #25 here:
    Home network - can't get all PCs to see each other
      My Computers

  3. Try3's Avatar
    Posts : 7,517
    Windows 10 Home x64 Version 20H2 Build 19042.928
       #3

    abacus,

    I get this problem on one of my computers, a ten-year old one, when it returns from sleep / hibernation.

    I work around the problem by disabling then re-enabling the network adapter using a batch file that needs to run elevated. It then detects wifi signals and connects to its network correctly.
    DisableEnableWiFiCard.bat
    Code:
    netsh interface set interface "Wi-Fi" disabled
    netsh interface set interface "Wi-Fi" enabled
    You need to substitute the name of your network adapter as it is shown in
    Control panel,
    [View by - Large/Small icons],
    Network and Sharing Center,
    Change adapter settings.

    I can also work around the problem by restarting the computer but that is not always convenient.

    Denis
    Last edited by Try3; 21 Feb 2020 at 08:26.
      My Computer

  4. spapakons's Avatar
    Posts : 2,891
    Windows 10 Pro 64-bit 202H (Nov 2020 build 19042.867)
       #4

    I would just click on the Flight Mode icon to disable Wi-Fi and then click again to re-enable it. Not script required. You can also configure the laptop not to sleep when power-connected and you close the lid, and to sleep only on battery from Power Options, so you don't have this issue in the first place.
      My Computer


  5. Posts : 45
    Windows 10 64 bit
    Thread Starter
       #5

    A scenario is that 1) both the laptop and the desktop are connected, can share files back and forth and the laptop can print to the printer that is usb connected to the desktop. Close the lid to the laptop, and 2) the connection is broken. The two computers no longer see each other. 3) BUT I can print from the laptop to the desktop printer without issue. But the network connection is apparently broken. So how can the laptop send a print job to the desktop printer (the printer does NOT have wifi) when the network connection is broken? The printer is a Brother DCP-L2520DW.

    spapakons said:
    I would just click on the Flight Mode icon to disable Wi-Fi and then click again to re-enable it. Not script required. You can also configure the laptop not to sleep when power-connected and you close the lid, and to sleep only on battery from Power Options, so you don't have this issue in the first place.
    I tried that suggestion, but cycling the wifi from on to off to on does not make the laptop re-connect to the desktop. To conserve battery power, I'd rather continue to allow the laptop to sleep when I'm not using it.
      My Computer

  6. spapakons's Avatar
    Posts : 2,891
    Windows 10 Pro 64-bit 202H (Nov 2020 build 19042.867)
       #6

    That's why I said to let it sleep in battery mode but do nothing when powered from the mains. For the trick to work you have to enable flight mode, wait a few seconds, then disable flight mode (and make sure you are connected to your own network, not any other), wait a few seconds for DCHP to properly configure the IP and other network parameters. Then you should be able to browse the network again. Not very convenient, but it works. The other solution is to prevent you laptop going to sleep when connected to the mains, so you never lose connection.
      My Computer


  7. Posts : 45
    Windows 10 64 bit
    Thread Starter
       #7

    snapakons, I appreciate your attention to my problem. I tried your suggestion again, but it did not re-connect. I enabled airplane mode (there's a confirming message on the screen that wifi is off), waited a couple of minutes, disabled airplane mode (and there's a message that it is re-connected) but it did not help; several minutes later there was no connection to the desktop. The logic of your suggestion makes sense to me, but I just could not get it to work.
      My Computer

  8. spapakons's Avatar
    Posts : 2,891
    Windows 10 Pro 64-bit 202H (Nov 2020 build 19042.867)
       #8

    Are you sure you have latest OEM (official) drivers for the Wi-Fi card? I mean either latest drivers provided from laptop's support site, or even better, latest drivers from the Wi-Fi card manufacturer's site. Please use a utility such as Aida64 or Speccy to identify the exact model of the Wi-Fi adapter and we can help you find drivers. Do not forget to tell if you are using 32-bit or 64-bit Windows.

    PS: If Windows Update found new drivers and replaced your old ones, it explains your issues. You need latest official, not Windows Update generic drivers.
      My Computer


  9. Posts : 45
    Windows 10 64 bit
    Thread Starter
       #9

    1) Device Manager reports that the WIFI adapter is a Dell Wireless 1820A 802.11ac. The manufacturer is Broadcom, the driver provider is Broadcom, the driver version is 1.566.0.2, the driver date is 10/18/2017. This is also the specific current driver shown on the Dell site for my computer.

    2) The computer is a Dell XPS13 9350. Running Windows Pro 1909 (64bit) 18363.592.

    3) Looking forward to any ideas re: solution.

    4) Thanks!!
      My Computer

  10. Try3's Avatar
    Posts : 7,517
    Windows 10 Home x64 Version 20H2 Build 19042.928
       #10

    What about the script that I posted?

    Denis
      My Computer


 
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