Access Point WiFi not working but Ethernet is ok

MaestroMetty

Thread Starter
Joined
Apr 15, 2021
Messages
12
Hi guys, I've recently configured a Dlink DSL-3788 as Access Point to expand my network, I have done the basic configuration (DHCP off, Different IP same Subnet etc.). Now if I try to connect to the DSL-3788 via Ethernet Cable everything it's working just fine, but if i connect via Wifi i get "No Internet Access" or "Could not get IP". The main router and the DSL-3788 are broadcasting the same SSID and there's no interference on the channels, I get this problems even if i disable 2.4ghz or 5ghz on the DSL-3788. What could be the problem?
 

TerryNet

Terry
Moderator
Joined
Mar 23, 2005
Messages
81,617
Maybe the following will give us a clue or two ...

If you have a computer running Windows show the following for both an ethernet and Wi-Fi connection to the Dlink DSL-3788.

Open a (black) Command Prompt window:
Hold the Windows logo key and press r; in the Run box type cmd and click on OK.
(In Windows 10 you may have to use some other procedure to get a Command Prompt window.)

Type the following commands

IPCONFIG /ALL

[Note that there is no space between the slash and ALL.]

[Press ENTER after the command.]

Right click in the command window and choose Select All, then hit Enter.
Paste the results in a message here.

If necessary use a text file and removable media to copy the results to a computer with internet access.
 

MaestroMetty

Thread Starter
Joined
Apr 15, 2021
Messages
12
LAN ipconfig /all:
Code:
Configurazione IP di Windows

   Nome host . . . . . . . . . . . . . . : LAPTOP-S4MPRJDC
   Suffisso DNS primario . . . . . . . . :
   Tipo nodo . . . . . . . . . . . . . . : Ibrido
   Routing IP abilitato. . . . . . . . . : No
   Proxy WINS abilitato . . . . . . . .  : No
   Elenco di ricerca suffissi DNS. . . . : homenet.telecomitalia.it

Scheda LAN wireless Connessione alla rete locale (LAN)* 1:

   Stato supporto. . . . . . . . . . . . : Supporto disconnesso
   Suffisso DNS specifico per connessione:
   Descrizione . . . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter
   Indirizzo fisico. . . . . . . . . . . : 4E-EB-BD-A9-4F-0D
   DHCP abilitato. . . . . . . . . . . . : Sì
   Configurazione automatica abilitata   : Sì

Scheda Ethernet Ethernet:

   Suffisso DNS specifico per connessione: homenet.telecomitalia.it
   Descrizione . . . . . . . . . . . . . : Realtek PCIe GbE Family Controller
   Indirizzo fisico. . . . . . . . . . . : 38-22-E2-F5-B1-8C
   DHCP abilitato. . . . . . . . . . . . : Sì
   Configurazione automatica abilitata   : Sì
   Indirizzo IPv6 locale rispetto al collegamento . : fe80::996a:a7a4:5b56:459d%17(Preferenziale)
   Indirizzo IPv4. . . . . . . . . . . . : 192.168.1.138(Preferenziale)
   Subnet mask . . . . . . . . . . . . . : 255.255.255.0
   Lease ottenuto. . . . . . . . . . . . : domenica 19 settembre 2021 19:38:59
   Scadenza lease . . . . . . . . . . .  : lunedì 20 settembre 2021 01:38:59
   Gateway predefinito . . . . . . . . . : 192.168.1.2
   Server DHCP . . . . . . . . . . . . . : 192.168.1.2
   IAID DHCPv6 . . . . . . . . . . . : 104342242
   DUID Client DHCPv6. . . . . . . . : 00-01-00-01-26-0F-09-09-38-22-E2-F5-B1-8C
   Server DNS . . . . . . . . . . . . .  : fe80::a691:b1ff:fe65:dca4%17
                                           192.168.1.2
                                           fe80::a691:b1ff:fe65:dca4%17
   NetBIOS su TCP/IP . . . . . . . . . . : Attivato
   Elenco di ricerca suffissi DNS specifici della connessione:
                                           homenet.telecomitalia.it
                                           homenet.telecomitalia.it

Scheda LAN wireless Wi-Fi:

   Stato supporto. . . . . . . . . . . . : Supporto disconnesso
   Suffisso DNS specifico per connessione: homenet.telecomitalia.it
   Descrizione . . . . . . . . . . . . . : Realtek RTL8821CE 802.11ac PCIe Adapter
   Indirizzo fisico. . . . . . . . . . . : 4C-EB-BD-A9-4F-0D
   DHCP abilitato. . . . . . . . . . . . : Sì
   Configurazione automatica abilitata   : Sì

Scheda Ethernet Connessione di rete Bluetooth:

   Stato supporto. . . . . . . . . . . . : Supporto disconnesso
   Suffisso DNS specifico per connessione:
   Descrizione . . . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
   Indirizzo fisico. . . . . . . . . . . : 4C-EB-BD-A9-4F-0E
   DHCP abilitato. . . . . . . . . . . . : Sì
   Configurazione automatica abilitata   : Sì
WiFi ipconfig /all:
Code:
Microsoft Windows [Versione 10.0.19042.1165]
(c) Microsoft Corporation. Tutti i diritti sono riservati.

C:\Users\giuli>ipconfig /all

Configurazione IP di Windows

   Nome host . . . . . . . . . . . . . . : LAPTOP-S4MPRJDC
   Suffisso DNS primario . . . . . . . . :
   Tipo nodo . . . . . . . . . . . . . . : Ibrido
   Routing IP abilitato. . . . . . . . . : No
   Proxy WINS abilitato . . . . . . . .  : No
   Elenco di ricerca suffissi DNS. . . . : homenet.telecomitalia.it

Scheda Ethernet Ethernet:

   Stato supporto. . . . . . . . . . . . : Supporto disconnesso
   Suffisso DNS specifico per connessione: homenet.telecomitalia.it
   Descrizione . . . . . . . . . . . . . : Realtek PCIe GbE Family Controller
   Indirizzo fisico. . . . . . . . . . . : 38-22-E2-F5-B1-8C
   DHCP abilitato. . . . . . . . . . . . : Sì
   Configurazione automatica abilitata   : Sì

Scheda LAN wireless Connessione alla rete locale (LAN)* 1:

   Stato supporto. . . . . . . . . . . . : Supporto disconnesso
   Suffisso DNS specifico per connessione:
   Descrizione . . . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter
   Indirizzo fisico. . . . . . . . . . . : 4E-EB-BD-A9-4F-0D
   DHCP abilitato. . . . . . . . . . . . : Sì
   Configurazione automatica abilitata   : Sì

Scheda LAN wireless Wi-Fi:

   Suffisso DNS specifico per connessione: homenet.telecomitalia.it
   Descrizione . . . . . . . . . . . . . : Realtek RTL8821CE 802.11ac PCIe Adapter
   Indirizzo fisico. . . . . . . . . . . : 4C-EB-BD-A9-4F-0D
   DHCP abilitato. . . . . . . . . . . . : Sì
   Configurazione automatica abilitata   : Sì
   Indirizzo IPv6 locale rispetto al collegamento . : fe80::2d48:c23a:29a9:2e74%11(Preferenziale)
   Indirizzo IPv4. . . . . . . . . . . . : 192.168.1.83(Preferenziale)
   Subnet mask . . . . . . . . . . . . . : 255.255.255.0
   Lease ottenuto. . . . . . . . . . . . : domenica 19 settembre 2021 19:41:42
   Scadenza lease . . . . . . . . . . .  : lunedì 20 settembre 2021 01:41:40
   Gateway predefinito . . . . . . . . . : 192.168.1.2
   Server DHCP . . . . . . . . . . . . . : 192.168.1.2
   IAID DHCPv6 . . . . . . . . . . . : 105704381
   DUID Client DHCPv6. . . . . . . . : 00-01-00-01-26-0F-09-09-38-22-E2-F5-B1-8C
   Server DNS . . . . . . . . . . . . .  : fe80::a691:b1ff:fe65:dca4%11
                                           192.168.1.2
                                           8.8.8.8
   NetBIOS su TCP/IP . . . . . . . . . . : Attivato
   Elenco di ricerca suffissi DNS specifici della connessione:
                                           homenet.telecomitalia.it

Scheda Ethernet Connessione di rete Bluetooth:

   Stato supporto. . . . . . . . . . . . : Supporto disconnesso
   Suffisso DNS specifico per connessione:
   Descrizione . . . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
   Indirizzo fisico. . . . . . . . . . . : 4C-EB-BD-A9-4F-0E
   DHCP abilitato. . . . . . . . . . . . : Sì
   Configurazione automatica abilitata   : Sì
 

TerryNet

Terry
Moderator
Joined
Mar 23, 2005
Messages
81,617
No actual wireless adapter is shown. "Microsoft Wi-Fi Direct Virtual Adapter" is not an actual device.

Do you have any reason to believe that this computer includes a wireless device? Does any wireless adapter show in Device Manager?
 

MaestroMetty

Thread Starter
Joined
Apr 15, 2021
Messages
12
No actual wireless adapter is shown. "Microsoft Wi-Fi Direct Virtual Adapter" is not an actual device.

Do you have any reason to believe that this computer includes a wireless device? Does any wireless adapter show in Device Manager?
Isn't "Scheda LAN wireless Wi-Fi" the wireless adapter? I know the laptop has one because i can easily connect to main router's wifi.
 

TerryNet

Terry
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Joined
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Messages
81,617
If I look at the description (Descrizione) of the ethernet I see that the brand is Realtec and the model is PCIe GbE Family Controller. What is the brand and model of the wireless?

What do you see different in the ipconfig /all when connecting via Wi-Fi to the main router?
 

MaestroMetty

Thread Starter
Joined
Apr 15, 2021
Messages
12
If I look at the description (Descrizione) of the ethernet I see that the brand is Realtec and the model is PCIe GbE Family Controller. What is the brand and model of the wireless?

What do you see different in the ipconfig /all when connecting via Wi-Fi to the main router?
This is what i get from connection to one of the working access point:
Code:
Configurazione IP di Windows

   Nome host . . . . . . . . . . . . . . : LAPTOP-S4MPRJDC
   Suffisso DNS primario . . . . . . . . :
   Tipo nodo . . . . . . . . . . . . . . : Ibrido
   Routing IP abilitato. . . . . . . . . : No
   Proxy WINS abilitato . . . . . . . .  : No
   Elenco di ricerca suffissi DNS. . . . : homenet.telecomitalia.it

Scheda Ethernet Ethernet:

   Stato supporto. . . . . . . . . . . . : Supporto disconnesso
   Suffisso DNS specifico per connessione: homenet.telecomitalia.it
   Descrizione . . . . . . . . . . . . . : Realtek PCIe GbE Family Controller
   Indirizzo fisico. . . . . . . . . . . : 38-22-E2-F5-B1-8C
   DHCP abilitato. . . . . . . . . . . . : Sì
   Configurazione automatica abilitata   : Sì

Scheda LAN wireless Connessione alla rete locale (LAN)* 1:

   Stato supporto. . . . . . . . . . . . : Supporto disconnesso
   Suffisso DNS specifico per connessione:
   Descrizione . . . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter
   Indirizzo fisico. . . . . . . . . . . : 4E-EB-BD-A9-4F-0D
   DHCP abilitato. . . . . . . . . . . . : Sì
   Configurazione automatica abilitata   : Sì

Scheda LAN wireless Wi-Fi:

   Suffisso DNS specifico per connessione: homenet.telecomitalia.it
   Descrizione . . . . . . . . . . . . . : Realtek RTL8821CE 802.11ac PCIe Adapter
   Indirizzo fisico. . . . . . . . . . . : 4C-EB-BD-A9-4F-0D
   DHCP abilitato. . . . . . . . . . . . : Sì
   Configurazione automatica abilitata   : Sì
   Indirizzo IPv6 locale rispetto al collegamento . : fe80::2d48:c23a:29a9:2e74%11(Preferenziale)
   Indirizzo IPv4. . . . . . . . . . . . : 192.168.1.83(Preferenziale)
   Subnet mask . . . . . . . . . . . . . : 255.255.255.0
   Lease ottenuto. . . . . . . . . . . . : lunedì 20 settembre 2021 18:16:55
   Scadenza lease . . . . . . . . . . .  : martedì 21 settembre 2021 00:16:54
   Gateway predefinito . . . . . . . . . : 192.168.1.2
   Server DHCP . . . . . . . . . . . . . : 192.168.1.2
   IAID DHCPv6 . . . . . . . . . . . : 105704381
   DUID Client DHCPv6. . . . . . . . : 00-01-00-01-26-0F-09-09-38-22-E2-F5-B1-8C
   Server DNS . . . . . . . . . . . . .  : fe80::a691:b1ff:fe65:dca4%11
                                           192.168.1.2
                                           8.8.8.8
   NetBIOS su TCP/IP . . . . . . . . . . : Attivato
   Elenco di ricerca suffissi DNS specifici della connessione:
                                           homenet.telecomitalia.it

Scheda Ethernet Connessione di rete Bluetooth:

   Stato supporto. . . . . . . . . . . . : Supporto disconnesso
   Suffisso DNS specifico per connessione:
   Descrizione . . . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
   Indirizzo fisico. . . . . . . . . . . : 4C-EB-BD-A9-4F-0E
   DHCP abilitato. . . . . . . . . . . . : Sì
   Configurazione automatica abilitata   : Sì
This is the control panel of the laptop where the wireless adapter is:
1632156050446.png
 

TerryNet

Terry
Moderator
Joined
Mar 23, 2005
Messages
81,617
It's difficult for me to believe that the computer shown in post # 3 is the same as the one shown in post # 7. If it's the same computer I cannot explain the differences.
 

MaestroMetty

Thread Starter
Joined
Apr 15, 2021
Messages
12
It's difficult for me to believe that the computer shown in post # 3 is the same as the one shown in post # 7. If it's the same computer I cannot explain the differences.
At the beginning of ip config it says "LAPTOP-S4MPRJDC" also the MAC is the same.
 

TerryNet

Terry
Moderator
Joined
Mar 23, 2005
Messages
81,617
Oh, nuts. Now I see that you put the ipconfig /all in "code" and it's necessary to scroll within that to see the whole thing. Not noticing that earlier makes most of my above responses nonsense! :( Sorry.

So, am I now right that both wireless connections look the same?

I don't know what's wrong with the connection to the access point. However, I don't trust that things will work as smoothly as we expect when both SSIDs are the same; so, for a test, I suggest changing the SSID on the access point.
 

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