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Unable to connect to this network. (WIFI)

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  • Level 8  
    Hello,

    For some time, the laptop has a problem with access to the WIFI network through an integrated wifi card. When you try to connect the message pops up:
    "Can not connect to this network."
    From what I've already determined, the problem probably occurs after some Win 10 update and most likely concerns the encryption method of the connection or the connection channel.

    What I have done so far:
    Spoiler:
    You are trying to connect to a Wi-Fi network that has worked so far, but now you get the error "Can not connect to this network"? See how to fix it in Windows 10.

    Windows 10 - you can not connect to this network

    In Windows 10, especially after an update like Creators Update or Fall Creators Update, a situation may arise that the wireless network that we connected to all the time ceases to be available to us. Yes, it will be displayed in the list, it will accept the password, but you will get the error "Unable to connect to this network" every time you try to connect.

    The problem becomes even more interesting because usually you can not connect to only one specific network - others (eg hotspot from a smartphone or tablet) work without a problem.

    A typical error

    Other computers in the home can also continue to connect to the network. What to do in this situation? How do you repair a Wi-Fi network so that you can reconnect?
    Reset your saved Wi-Fi network settings

    The first way that you should always try when you have problems with a Wi-Fi network is to delete the saved network profile, so that you need to reconnect with the password from the beginning. In many cases this allows you to solve the problem with this message.

    To do this, go to the Start menu and run the "Settings" application. Then go to the "Network and Internet> Wi-Fi" tab.

    Go to network profile management options

    After selecting the "Wi-Fi" tab, a summary will appear from the wireless network card. Select the option "Manage known networks" here.

    Forget the network settings

    A list will appear of all Wi-Fi networks to which the passwords are stored on your computer. Look for a network that you can not connect to and choose "Forget". Now you can try to connect to the network again - remember that you will need to enter the password.
    Clear registry entries for network settings

    If the above, the simplest method did not help, then it's time to go a step further and clear entries related to Wi-Fi networks using the Registry Editor. This is the most common source of problems and this method should help in most cases.

    Press the Windows + R key combination, and then type the following command in the start window:

    regedit

    Confirm the command. The Registry Editor window appears. On the left side of the window you will find folders with registry keys. Expanding the appropriate one, go to the following path:

    HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ Tcpip \ Parameters \ Interfaces

    Go to the Interfaces key in Registry Editor

    Expand the Interfaces key. Inside, you'll find a lot of minor keys with long names. Delete all of them by right-clicking each one of them and selecting "Delete".

    Delete unnecessary keys

    At the end you will only have an empty key "Interfaces" - you can leave it. Close now Registry Editor and restart your computer. Try to connect to a Wi-Fi network. It should work properly now.
    Change the security settings or the network standard in the router

    The last solution, when none of the above suggestions will work, is to temporarily change the settings on the router to "reset" the saved settings in the computer. Exactly it is about the security level settings (WPA2 etc.) as well as the network standard (802.11b, 802.11g, 802.11n).

    Changing these settings (even if everything previously worked) will help you force the reconnection to the Wi-Fi network and overwrite the old settings, which the computer still stubbornly holds. To do this, you must use a different computer at home (or using a smartphone) to log in to the Wi-Fi network and enter the router settings.

    See how to find the IP address and password to log into the router

    Once you are in the router's settings, first go to the tab responsible for setting wireless networks (Wireless). At this point you should find the "Network mode" option, which allows you to switch between the B, G, and N standards.

    Change the settings in the router

    Try setting a different standard (eg B / G / N Mixed) and save the settings, then try to connect to the network again on the computer that has problems with Wi-Fi. If that does not help, change the security standard (temporarily!) From WPA2 to WPA or WEP. Once you finally connect to the network, you can change the settings on the router back to WPA2 (you should not use older standards, especially WEP).

    The above method worked on one of the most difficult cases, which was resistant to all other solutions. Only temporary change of settings on the router has helped to force connection to the network with different parameters. When the network has already "unlocked" on the computer, it was possible to return to the appropriate network standards and security in the router, and then reconnect.


    The first two ways did not help, the last thing surprisingly helped but only how the encryption method was set on WPA-PSK (Tkip), at the lowest speed. As I restored the connection settings in the "n" channel, WPA-PSK (Aes) encryption no longer reconnects. The same occurs when you try to connect to 2 routers. I would add that previously the laptop would normally connect to a network that it can not connect to now.

    How to try to connect the hotspot with mobile phone works without a problem, the same when connecting to the WIFI 5G network.

    I tried the ipconfig / release and renew commands but they do not work at all. The following message appears: "The operation failed as the adapter is in the state permissable for this operation"

    EDIT: On the outside of the wifi (usb) card you can easily connect to all networks. The problem concerns only the integrated card.
    The integrated card is: Qualcomm Atheros QCA9377
    Lapek is: Acer aspire f5-573g
    Any suggestions on what can be done in this matter?
  • PCBway
  • Network and Internet Specialist
    Do you have the latest controls loaded into this card?
    Have you tried uninstalling and reinstalling the WIFI card controls?
    Have you tried to install an old chip manufacturer (if any)?
    google windows 10 Qualcomm Atheros QCA9377
  • PCBway
  • Level 8  
    bogiebog wrote:
    Do you have the latest controls loaded into this card?
    Have you tried uninstalling and reinstalling the WIFI card controls?
    Have you tried to install an old chip manufacturer (if any)?
    google windows 10 Qualcomm Atheros QCA9377


    That's how I tried to upload drivers - it did not do anything.
    I have reset the wifi card, uninstalled it by the manager and then nothing.
    I have not found any drivers from the chip manufacturer.
  • Network and Internet Specialist
    Does Acer aspire f5-573g have windows 10 support from the manufacturer?

    Added after 7 [minutes]:

    Scan the network with inssider 2.x, what does it show?
    What signal strength?
  • Level 8  
    bogiebog wrote:
    Does Acer aspire f5-573g have windows 10 support from the manufacturer?
    Added after 7 [minutes]:
    Scan the network with inssider 2.x, what does it show?
    What signal strength?


    From what I see on the acera site: link this is information about the imported wine 10. Controllers from the manufacturer's website, however, do not help. It is supposed to be uploaded some program related to support but does not find any errors.

    I do not have access to my paw for the moment Signal strength, but judging from the fact that the router is 2m from the laptop, it will not be weak.

    Any suggestions on how to clear the system for remembered network settings / wifi network cards and ipv4 connections? (Including register)

    As a last resort, I will pull a heavy cannon in the form of system restore.
  • Network and Internet Specialist
    Start the computer in safe mode + network support, does it change anything?