Cannot connect to homegroup on wireless network

Hello, i have a dell laptop running on windows 7 ultimate 32bit and i could connect to my network of computers (5 computers) on my workgroup and print wirelessly on a printer on another computer on my network until my antivirus expired and i renewed antivirus today after 4 days. Now i cannot connect to my workgroup of computers wirelessly...if i connect via LAN i can see other computers on my network and share files and printers. But on wireless i cannot connect to the network....can anyone help me out?

Welcome to the forum. What anti virus have you renewed? Have you reset the router as there is often a setting to block wireless seeing pc? You title says home group but your saying work group two different things

Problem solved, joined workgroup on Ethernet cable then switched to wireless, now showing computers on network

Ethernet is a physical connection; wireless is a "radio" connection. As such, an Ethernet connection will always happen, as long as the wire isn't damaged. however, a wireless connection might not happen, because it is a lot more complex than that -- there is a lot more that can fail, causing the connection to fail.

I can imagine the wireless device using an Ethernet connection to "find" the network; then as soon as it finds the network, you can remove the Ethernet cable and keep using the wireless connection.

A similar process is available for some wireless printers. (Canon and HP come to mind.) If your computer can't find the wireless printer, you can connect the printer via a USB cable to the computer; the computer will then find the printer and set up the wireless connection; you can then remove the USB cable and print using the wireless connection.