disable WiFi when Ethernet connected to laptop?

If the machine has been set up properly, this is always automatic.

If you need to, you can go into the advanced properties of the wired Network adapter and set it to a higher priority.

I use wireless extensively, but if I plug in an Ethernet cable, it always takes priority.

Also a BIOS setup option and with some manufacturers they have their own utility installed to do this (I know both Dell and HP offer this through QuickKeys/QuickSet).

I believe the wifi actually does not get disabled, Usually, the ethernet connection has a higher preference (lower metric). I believe this is John hurst meant.

The Wi-Fi will remain on, but it will not connect if Ethernet is active

the wifi will connect if a wireless connection known by the laptop is present.  The traffic might not leave through that connection, but both will be active and functional

Step 1
Press “Windows-R” to open a Run dialog box on the Windows 7 computer.

Step 2
Type “ncpa.cpl” in the Run field, and then click “OK” to launch the Network Connections control panel applet.

Step 3
Click the “Advanced” tab in the top navigation menu to open the Advanced menu.

Step 4
Click the “Advanced Settings” option to open the Advanced Settings dialog box.

Step 5
Click the “Wi-Fi” entry, and then click the downward-pointing green arrow to move the wireless connection down in the priority list. Move the “Wi-Fi” entry below the “Ethernet” entry. The Ethernet entry automatically moves to the top to set the wired connection priority higher than the all other connections.

Step 6
Click “OK” and close the dialog box. The wireless connection will now yield to the wired LAN connection.

Note: If you don’t want to manually configure your network connections, you can download and install a VB script from Microsoft Technet that will automatically disable your wireless connection in Windows 7 when Ethernet is active (see Resources)...

If you want utilities : https://www.raymond.cc/blog/auto-disable-wireless-when-lan-connected/

Arnold said "the wifi will connect if a wireless connection known by the laptop is present."

If Ethernet is plugged in and the machine is working properly, Wi-Fi will not connect (even in a known environment) so long as Ethernet is working.

@msretailit  - Are you having issues?  Please let us  know.

The switchover between wired and wireless should be completely automatic in Windows 7 and above. My current machine is Windows 8 and I can plug in Ethernet and my wireless will disconnect immediately (but not disabled - that is not a good idea).

If you are still looking to disable rather than change priorities the BIOS option on Dell Latitudes for example is "Wireless Radio Control" or "Control WLAN Radio".  

When enabled in BIOS Setup if a wired Ethernet connection is detected the wireless card is disabled, ignoring any hardware switch settings.

Dear All,

I done what John suggested and I have still problem that wireless will not disconnect when Ethernet will connect.

Try running System File Checker. Open an admin command prompt and run SFC /SCANNOW. Allow to complete, run again and restart.

Then reinstall the wireless driver and restart again.

Does that help?

Hi,

still i have the same problem

Something has damaged your operating system. Assuming this is Windows 7, you may wish to consider a Windows 7 Repair Install. You can do this with the Windows 7 DVD and sometimes with the Recovery Partition. Here is a Seven Forums Tutorial to assist.

http://www.sevenforums.com/tutorials/3413-repair-install.html

my system is windows 7 and it is brand new,i had tried with other two computers also same result.