"When connecting to Wi-Fi, it asks for a network security key" – what is this and how can I find it?

Are you trying to connect to Wi-Fi, but your device insists on entering a "network security key" and won't let you continue without it? This is a common situation that every user encounters when connecting to a secure wireless network for the first time. A security key (or Wi-Fi password) is the primary barrier that protects your internet from prying eyes. Without it, connecting to the network is impossible, even if the signal is perfect.

In this article we will figure out, What is a Wi-Fi security key?, why it's needed, where to get it (if you've forgotten it or don't know it), and how to enter it correctly to finally gain internet access. You'll also learn about the different types of security, how to change the key on your router, and what to do if the device doesn't accept the correct password. These instructions are suitable for Windows 10/11, Android, iOS, as well as for popular router models: TP-Link, ASUS, Xiaomi, Keenetic and others.

What is a Wi-Fi security key and why is it needed?

Network Security Key (eng. network security key) is, in essence, your Wi-Fi passwordIt protects your wireless network from unauthorized access by encrypting transmitted data. Without this key, you can't connect to the network, even if you know its name.SSID).

Main functions of the security key:

  • 🔒 Protection against hacking: Prevents the connection of third-party devices that could steal traffic or data.
  • 📡 Access control: Only those you share the password with will be able to use your Wi-Fi.
  • 🔄 Traffic encryption: all transmitted data (passwords, messages, banking transactions) are protected from interception.

If the router asks for a security key when connecting, it means that the network is protected by one of the standard protocols: WPA2-PSK, WPA3-PSK or outdated WEPThe latter is rarely used today due to its low reliability. Modern routers are configured by default to WPA2/WPA3 — this is the optimal balance between security and compatibility.

Where is the network security key located: 5 ways to find out the password

If you've forgotten your Wi-Fi password or never knew it (for example, if your network was set up by your ISP), there are several ways to find it. The method you choose depends on which device is already connected to the network and what data you have.

1. On the router sticker

The easiest way is to look at the password on the router itself. Most manufacturers indicate network name (SSID) And security key (Password/Key) on the sticker, which is located:

  • 📦 On the bottom or back panel of the case.
  • 📄 In the operating instructions (if the router is new).
  • 🔄 Under the removable cover (on some models, for example, Huawei).

Usually the password is indicated next to the following inscriptions: Wi-Fi Password, Network Key, Pre-Shared Key or Security key.

If the sticker is worn off or missing, move on to other methods.

2. In the router settings (via the web interface)

If you have access to your router (for example, via a cable or another connected device), you can access its settings and view the security key. To do this:

  1. Open your browser and enter your router's IP address in the address bar. This is usually: 192.168.0.1, 192.168.1.1 or 192.168.8.1 (check the sticker).
  2. Enter your login and password to log in (by default, it is often admin/admin or admin/empty).
  3. Go to the section Wi-Fi (or Wireless network, Wireless).
  4. Find the field Password, Security key or PSK Password.
Where exactly can I find the key in popular routers?

U TP-Link: Wireless → Wireless Security → Password.

U ASUS: Wireless Network → Authentication Settings → WPA Pre-Shared Key.

U Xiaomi/Redmi: Wi-Fi → Wi-Fi Password.

U Keenetic: Home Network → Wi-Fi Segment → Network Key.

If you can't access your router settings, your ISP may have changed your login information. In this case, contact support or reset the router to factory settings (press the button). Reset on the back panel).

3. On a device already connected to Wi-Fi (Windows, Android, macOS)

If at least one gadget (laptop, smartphone, tablet) is already connected to the network, you can extract the password from its settings.

On Windows 10/11:

  1. Open Settings → Network and Internet → Wi-Fi.
  2. Click Managing known networks → select your network → Properties.
  3. Scroll to section Security parameters and check the box Show entered characters.

On Android:

Without root rights It is impossible to see the password, but if you have superuser rights, use the application WiFi Password Viewer or similar. On some firmware (for example, MIUI on Xiaomi) the password can be seen in the router settings through the application Mi Home.

On macOS:

  1. Open Programs → Utilities → Keychain.
  2. Find the name of your Wi-Fi network and double-click on it.
  3. Check the box Show password and enter your Mac account password.

4. In the provider's mobile application

Many internet service providers (eg. Rostelecom, MTS, Beeline, Dom.ru) offer mobile apps for managing your router. They often display the current Wi-Fi password. For example:

  • 📱 In the app My MTS: Services → Internet → Wi-Fi Settings.
  • 📱 In Rostelecom Personal Account: Hardware → Router Settings.

If you don't have the app, check your SMS or email from your provider—sometimes they send you a password when you sign up for the service.

5. From your provider (if the router was provided by the operator)

If the router is provided by the provider (for example, GPON terminal from Rostelecom or MGTS), the security key could have been specified in the contract or sent via email/SMS upon activation. It can also be:

  • 📞 Find out by calling the hotline (the number is usually on the sticker on the router).
  • 💬 Request in support chat (for example, via Telegram-provider bot).
  • 📧 View in your personal account on the provider's website.
📊 How do you usually find out your Wi-Fi password?
I'm looking at the router's sticker.
I go to the router settings
I use the saved password on the device
I'm calling the provider
I don't know, I've never looked.

Types of Wi-Fi Security Keys: Which One Do You Use?

Not all security keys are created equal. The type of protection affects network reliability and device compatibility. Here are the main standards you might encounter:

Type of protection Description Reliability Used in
WEP Outdated standard (1999), easily hacked. ❌ Low Old routers (before 2006)
WPA (TKIP) First version WPA, vulnerable to attacks. ⚠️ Average Routers 2003–2010
WPA2-PSK (AES) The most common standard (since 2006). ✅ High 99% of modern routers
WPA3-PSK The latest standard (since 2018), resistant to brute force. ✅✅ Very high Routers from 2020 (ASUS RT-AX88U, TP-Link Archer AX6000)

If your router is still using WEP or WPA, urgently change the type of protection WPA2-PSK or WPA3-PSK in the settingsThese outdated standards can be hacked in a few minutes using special programs (for example, Aircrack-ng).

To check your network security type:

  • 🖥️ On Windows: open Control Panel → Network and Internet → Network and Sharing Center → Change adapter settingsDouble click on your Wi-Fi, then Wireless Network Properties → Security.
  • 📱 On Android: install the application WiFi Analyzer - it will show the encryption type for available networks.

What to do if the security key does not work

You've entered the password, but your device still won't connect to Wi-Fi? There could be a variety of reasons, from a simple typo to incompatible security standards. Let's take a look at each one.

1. Check the input is correct

The most common error is an incorrectly entered password. Make sure:

  • 🔤 Letter case matches (password is case sensitive) Uppercase/lowercase symbols).
  • 🔢 Numbers are not replaced with similar letters (for example, 1 And l, 0 And O).
  • 🌐 The keyboard language is correct (sometimes the password is entered using the English keyboard layout, but you switched to the Russian one).

If you are unsure, try typing the password in notepad, then copy and paste it into the security key field.

2. Reboot the router and device

Sometimes the problem is a temporary glitch. Follow these steps:

☑️ Checking connection when key error occurs

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3. Check the security type in your router settings

If the password is correct but the connection fails, the device may not support the selected security type. For example:

  • 📱 Old smartphones (Android 4.x, iPhone 4/5) don't work with WPA3.
  • 🖥️ Some laptops with older Wi-Fi adapters do not support AES encryption.

Solution: Go to your router settings and change the security type to WPA2-PSK (AES) — is a universal option that is supported by 99% of devices.

4. Reset your router (if nothing helps)

If you're sure the password is correct but still can't connect, your router settings may be corrupted. In this case, (Hard Reset):

  1. Press and hold the button Reset on the back panel of the router (usually 10-15 seconds).
  2. After rebooting, the router will return to factory settings.
  3. The new password will be indicated on the sticker (or you can set it again in the web interface).
⚠️ Attention: After the reset, all personal settings (including the network name and password) will be deleted. You will have to set up the router again, just like you did after purchasing it.

How to change the network security key on a router

If you want to change your Wi-Fi password (for example, because it's too simple or someone else has discovered it), you can do so through the router's web interface. The instructions are universal for most models, but the menu paths may vary slightly.

Step-by-step instructions

  1. Log into your router settings:
    • Open your browser and enter the router's IP address (e.g. 192.168.1.1).
    • Enter your login and password (by default it is often admin/admin).
  2. Go to the Wi-Fi section:
    • Look for tabs Wireless, Wi-Fi, Wireless network.
    • On some routers (Keenetic) you need to go to Home Network → Wi-Fi Segment.
  3. Find the password field:
    • It can be called Password, Security key, PSK Password or Pre-Shared Key.
    • Enter a new password (recommended length is 8–16 characters, with letters, numbers and special characters).
  • Save changes:
    • Click Apply, Save or OK.
    • The router will reboot and all devices will be disconnected from Wi-Fi.

    After changing the password, you will have to reconnect all gadgets to the network using the new security key.

    Recommendations for choosing a strong password

    To keep your Wi-Fi protected from hacking, follow these tips:

    • 🔐 Use at least 12 characters (the longer, the more reliable).
    • 🔤 Combine capital letters And lowercase letters, numbers and special characters (!@#$%).
    • 🚫 Avoid obvious words (qwerty, 12345678, password).
    • 🔄 Change your password every 3-6 months (especially if guests connect to the network).
    ⚠️ Attention: if you use WPS (quick connection button on the router), disable this function in the settings. WPS has vulnerabilities that allow a PIN code to be guessed in a few hours.

    Common mistakes and how to avoid them

    Even experienced users sometimes encounter problems entering their security key. Here are the most common errors and how to fix them:

    1. The device does not see the network after changing the password

    If after changing the security key the network disappears from the list of available ones:

    • 🔄 Reboot your router and device.
    • 📶 Make sure that Wi-Fi on your router is turned on (the indicator should be on).
    • 🔍 Check if the network name is hidden (SSID) in the router settings.

    2. The security key is too long or complex

    Some devices (especially older ones) don't support passwords longer than 32 characters or with certain special characters. If you encounter this issue:

    • 🔤 Shorten your password to 16-20 characters.
    • 🚫 Remove rare symbols (§±@), leave only !#$%.
    • 🔄 Try using only letters and numbers.

    3. The connection is established, but there is no internet.

    If your device connects to Wi-Fi but pages won't open:

    • 🌐 Check if your internet service provider has paid for it.
    • 🔌 Make sure that the cable from the provider is connected to the router (indicator WAN/Internet should burn).
    • 🔄 Reboot your router and check the settings DHCP (must be enabled).

    4. The security key is requested again after rebooting

    If the device constantly forgets the password:

    • 📱 On Android/iOS: Remove the network from your saved networks and reconnect.
    • 🖥️ On Windows: open Settings → Network → Wi-Fi → Manage known networks, select the network and press Forget.
    • 🔧 Check your router settings: disable the function Isolation of clients (if it is enabled).

    FAQ: Answers to Frequently Asked Questions

    Is it possible to connect to Wi-Fi without a security key?

    No, if the network is secure. The only exceptions are:

    • The network is open (no password) - but it is not secure.
    • You are using WPS (button on the router) - but this method is vulnerable to hacking.
    • You are connecting via QSS (for some routers TP-Link) - the PIN code from the sticker is required.

    In all other cases, the security key is required.

    What should I do if I forgot my security key and there is no sticker on my router?

    Try these methods:

    1. Look at the password on a device that is already connected to the network (see the section above).
    2. Access your router settings via a browser (if you know the login/password for the admin panel).
    3. Reset the router to factory settings using the button Reset (the password will be reset to the default one from the sticker).
    4. Contact your provider if the router is theirs.
    Which security key is more secure: WPA2 or WPA3?

    WPA3 more reliable because:

    • Uses stronger encryption (SAE instead of PSK).
    • Protected against dictionary attacks (brute force).
    • Supports Forward Secrecy (even if the password is hacked, past sessions remain protected).

    However WPA3 older devices (manufactured before 2018) are not supported. In this case, it is better to use WPA2/WPA3 Transition Mode.

    Is it possible to find out the security key of someone else's network?

    Technically yes, but that's illegally and is punishable under Article 272 of the Criminal Code of the Russian Federation ("Unauthorized access to computer information"). Hacking methods (for example, Aircrack-ng, Wifite) require special knowledge and work only against legacy networks (WEP, WPA). Modern networks with WPA2/WPA3 and it is almost impossible to hack with a complex password.

    If you need access to someone else's Wi-Fi, it's best to ask the network owner to give you the password.

    Why does the router ask for a security key, even though it used to connect automatically?

    Possible reasons:

    • 🔄 The router was rebooted or reset to factory settings.
    • 🔧 Security settings have changed (for example, the password or encryption type has changed).
    • 📱 The network settings on the device have been reset (for example, after an OS update).
    • 🛡️ The mode has been activated MAC filtering (the router blocks unknown devices).

    Solution: Check your router settings or reconnect using the security key.

    • 📖 Read also

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