Why specific wireless clients cannot find the SSIDs?

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Range Issues

One of the most common reasons for specific devices may not detect a Wi-Fi network is due to range issues. If your device is too far from the wireless router or if there are physical obstructions like walls or large metal objects, the Wi-Fi signal might not reach your device. Here are a few steps to resolve this:

• Move closer to the Wi-Fi router.
• Remove or reposition any physical obstructions that might block the signal.

Network Configuration Issues

If your Wi-Fi network’s SSID is set to be hidden, it won’t appear in the list of available networks on your MacBook. You will need to manually connect to the network by entering the SSID. To check this:

• Access your SSID settings (Configure » SSID advanced settings » Basic Info) and ensure the "Hide SSID" is not enabled.

Outdated Wi-Fi Adapter Driver

An outdated driver for your device's Wi-Fi card can prevent it from detecting Wi-Fi networks. To update the driver:

• Identify your Wi-Fi card model
• Search online for the latest driver: Use a search engine to find the latest driver by typing "[Wi-Fi card model name] + driver."
• download and update the Wi-Fi network interface card

Wi-Fi Card Incompatibility with Configured Radio Mode

If your Wi-Fi network operates on the radio mode that your device's Wi-Fi card is incompatible with this standard, the SSID may not appear. To resolve this:

• Change the radio mode of your Wi-Fi network: Access your router's settings at Configure » Radio settings » click the AP and modify the radio mode.
• Switch the radio mode to 802.11n on 2.4GHz or 802.11ac on 5GHz.
• After adjusting these settings, check if your device can now detect the SSID.

Hardware Problems

In some cases, the issue might be with the devices' hardware, specifically the wireless network card. If the card is faulty or damaged, it may fail to detect Wi-Fi networks. To diagnose this:

• Try connecting to Wi-Fi with another device. If other devices can connect, the issue might be with your MacBook’s hardware.

By understanding these common issues, you can take steps to troubleshoot and resolve Wi-Fi connectivity problems on your devices.