How to Change Wifi Password in Mac? Update System Settings

Introduction

Knowing How to Change Wifi Password in Mac? is one of those skills that every Mac user should have in their toolkit. Whether you are concerned about unauthorized users on your network, want to update an old password, or just need to rotate your credentials for better security, changing your Wi-Fi password from your Mac is a straightforward process when done the right way.

The key thing to understand is that you cannot directly change your Wi-Fi network password from the Wi-Fi menu on macOS alone. The password is controlled by the device that creates and manages your wireless network, which is usually your router. Your Mac simply allows you to forget the old network, connect with the new password, or in some cases update saved credentials through your Keychain.

Throughout this guide, you will learn the correct approach to updating your network credentials, how to access your router settings from your Mac, how to update saved Wi-Fi passwords on your Mac after the change, how to troubleshoot common issues, and how to keep your home or work network secure going forward.

Table of Contents

• Understanding How Wi-Fi Passwords Work on a Mac
• Before You Begin: Preparation Checklist
• Finding Your Router Login Details
• Accessing Your Router Settings From Your Mac
• Changing Your Wi-Fi Password in Router Settings
• Updating the Saved Wi-Fi Password on Your Mac
• Forgetting and Reconnecting to the Network
• Updating Wi-Fi Passwords on Multiple Devices
• Tips for Creating a Stronger Wi-Fi Password
• Best Practices for Long-Term Wi-Fi Security
• Troubleshooting Common Issues
• Comparing Ways to Manage Network Access
• Frequently Asked Questions
• Conclusion

Understanding How Wi-Fi Passwords Work on a Mac

Before jumping straight into the steps for How to Change Wifi Password in Mac?, it is important to clear up a common misconception. Your Mac does not act as the password generator for your wireless network. The password is a setting stored on your wireless router or access point.

When you connect your Mac to a network for the first time, macOS saves that network name and its password inside the Keychain Access app. This is what allows your Mac to automatically reconnect when the network is in range. If you change the password at the router level, every saved device, including your Mac, will need the new password to reconnect.

So, the correct workflow is twofold. First, update the Wi-Fi password through your router’s admin interface. Second, update or re-enter that new password on your Mac so that it can reconnect to the network without errors.

Keychain and Saved Credentials Explained

macOS uses Keychain to securely store login details, including Wi-Fi network passwords. If your Mac keeps trying to connect with an outdated password, it is almost always because that old credential is still saved in your Keychain. Removing or updating it is a necessary step after changing the network password.

Before You Begin: Preparation Checklist

Taking a few minutes to prepare will save you time and prevent unnecessary frustration. Use this checklist before making any changes:

1. Connect to the network first: For the easiest route, connect your Mac directly to the Wi-Fi network you want to update, or use an Ethernet cable to connect your Mac to the router for extra stability.
2. Have router access nearby: Know where your router is physically, as some older routers require being on the same local network to log in.
3. Gather login details: Find the router admin username and password. If you have never changed them, they are often printed on a label on the router itself.
4. Know your network name: Take note of your current Wi-Fi network name, also known as the SSID, so you know exactly which network you are updating.
5. Plan for reconnection: Be ready to reconnect all of your other devices once the new password is active, such as phones, tablets, smart TVs, and other computers.

Finding Your Router Login Details

To change your Wi-Fi password, you must log into your router’s settings page. Most routers use a private web address, often referred to as a gateway address. From your Mac, you can find this quickly.

Find the Router IP Address on macOS

1. Open System Settings on your Mac.
2. Go to Network from the sidebar.
3. Select your active Wi-Fi network from the list, or if using Ethernet, select that connection.
4. Look for the entry labeled Router or Gateway. This will be a series of numbers, such as something like 192.168.1.1, 192.168.0.1, or 10.0.0.1.

Find the Admin Login Credentials

Check the following places for your router login:

• Router label: Many routers have a sticker on the bottom or back with “Admin Username”, “Admin Password”, or “Login” details.
• Router manual or original box: If you still have them, these often list default login details.
• Previous setup notes: If someone else configured the router, check any saved notes or ask the person who originally set it up.

If the default credentials were changed and you do not remember them, you may need to reset the router to factory defaults as a last resort. Only do this if no other option exists, as it will erase all custom router settings.

Accessing Your Router Settings From Your Mac

Once you have the gateway address and admin credentials, you can log in directly from your Mac’s web browser.

1. Open any standard web browser on your Mac.
2. Type your router gateway address into the address bar and press return. For example: http://192.168.1.1.
3. You should be greeted by the router login page. Enter your admin username and password.
4. Once authenticated, you will be inside your router’s admin dashboard.

It is worth noting that every router brand uses a slightly different layout, but the core options for wireless settings are almost always present under names like “Wireless”, “Wi-Fi”, “Wireless Settings”, “Network”, or “Security”.

Changing Your Wi-Fi Password in Router Settings

This is the most important part of learning How to Change Wifi Password in Mac?. The exact menu names can vary, but the general path remains very similar across most routers.

Step-by-Step Instructions

1. Locate wireless settings: After logging in, look for a tab or section titled Wireless, Wi-Fi Settings, or Basic Wireless Settings.
2. Select the correct band: If your router supports both 2.4GHz and 5GHz, you may see two separate sections. You can use the same password for both, or different ones. Using the same password is more convenient for most households.
3. Find the security field: Look for a field labeled Password, Wireless Password, Passphrase, Pre-Shared Key, or Network Key.
4. Enter your new password: Delete the old password and type in your new, strong Wi-Fi password. Take care to type it correctly, as case sensitivity applies.
5. Save or apply changes: Click Apply, Save, or Update. Your router may take a few seconds to restart or reapply settings. During this short period, your Wi-Fi may disconnect temporarily.

What About the Network Name (SSID)?

You do not have to change your SSID to change your password. However, if you want a fresh start, you can rename it at the same time. Just be aware that if you change the network name, your Mac and all other devices will see it as an entirely new network and will need to connect from scratch.

Updating the Saved Wi-Fi Password on Your Mac

After changing the password at the router level, your Mac will likely fail to auto-connect or show an incorrect password prompt. To fix this, you have a couple of reliable options.

Option 1: Reconnect When Prompted (Easiest)

1. Once the router applies the new password, your Mac should detect the network and show a connection prompt.
2. Enter your new Wi-Fi password in the field provided.
3. Click Join.
4. macOS will usually offer to save this new password to your Keychain. Accept it so that future connections are automatic.

Option 2: Update via Keychain Access (If It Keeps Using Old Password)

If your Mac repeatedly tries the old password, manually removing the saved entry from Keychain is the fix.

1. Open Keychain Access. You can find it by using Spotlight and searching for “Keychain Access”.
2. In the sidebar, select System or login, depending on where the entry is saved.
3. In the search bar, type the exact name of your Wi-Fi network (SSID).
4. Find the entry labeled as AirPort network password for that network.
5. Right-click or control-click the entry and select Delete. You may need to authenticate with your Mac user password.
6. Close Keychain Access, go to your Wi-Fi menu, select the network, and enter the new password when prompted.

After doing this, your Mac will store the correct password going forward.

Forgetting and Reconnecting to the Network

Another clean way to handle this when dealing with How to Change Wifi Password in Mac? is to “forget” the network entirely. This clears both the connection profile and the old saved password in one action.

1. Open System Settings on your Mac.
2. Go to Network and select Wi-Fi.
3. Click Advanced to view known networks.
4. Find your Wi-Fi network in the list of preferred networks.
5. Select it and click the Remove (-) button to forget the network.
6. Click OK and return to the Wi-Fi menu.
7. Select your network again from the available list and enter the new password when prompted.

This method is especially reliable if you are running into persistent authentication errors after changing your password.

Updating Wi-Fi Passwords on Multiple Devices

Changing the password affects every device that previously connected to that network. After updating it on your Mac, it is wise to go through your other devices to avoid connection issues.

General Advice for Other Devices

• Mobile devices: If they don’t connect automatically, forget the network in their Wi-Fi settings and reconnect with the new password.
• Smart home devices: Items like smart plugs, speakers, or cameras often require a manual reconnect through their own app or setup process.
• Guests: If you share your network with others, let them know the new password only through a secure method.
• IoT with limited interfaces: Some older devices can be tricky. If a device refuses to update, forgetting and rejoining usually resolves it.

Taking care of this all at once prevents constant pop-ups and failed connection attempts across your home.

Tips for Creating a Stronger Wi-Fi Password

Since you are taking the time to update your password, this is the perfect opportunity to make it far more secure than the old one. A weak password is one of the easiest ways for unwanted users to gain access.

• Use length over simplicity: Aim for at least 16 characters. Longer passphrases are much harder to guess than short, complex strings.
• Mix character types: Use a combination of uppercase letters, lowercase letters, numbers, and symbols when your router allows them.
• Avoid personal information: Stay away from names, birthdays, phone numbers, addresses, or pet names.
• Use a unique passphrase: Do not reuse passwords from email, banking, or other accounts.
• Consider a passphrase: A random string of unrelated words can be both strong and easier to type than a jumble of symbols.
• Do not share unnecessarily: Only give the password to people who truly need access.

Best Practices for Long-Term Wi-Fi Security

Changing your password is a great first step, but long-term security comes from a few extra habits. Applying these will drastically reduce your risk over time.

Router-Level Security

• Change router admin credentials: The login for your router dashboard should be different from your Wi-Fi password. Change it to something unique and strong.
• Keep router firmware updated: Check for firmware updates in your router settings periodically. Updates often patch known vulnerabilities.
• Use modern encryption: If your router allows you to choose a security type, use the most up-to-date option available for your model. Avoid outdated options that are no longer considered secure.
• Disable remote management: Unless you have a specific need for it, turn off remote administration so that your router cannot be accessed from outside your local network.

Network Usage Habits

• Review connected devices: Many router dashboards show a list of connected devices. If you see anything unfamiliar, change your password again and review your settings.
• Use a guest network: If your router supports a guest network, use it for visitors. This keeps your main network separate and limits access to your primary devices.
• Update on suspicion: If you suspect someone has gained unauthorized access, change your Wi-Fi password and router admin password immediately.
• Be cautious with sharing: Avoid sending your Wi-Fi password in plain text through unencrypted messages whenever possible.

Troubleshooting Common Issues

Even with the correct steps for How to Change Wifi Password in Mac?, you may run into a few hiccups. Here are solutions to the most common problems.

Issue	Possible Cause	Recommended Fix
Mac keeps asking for the old password	Old credential still saved in Keychain	Forget the network or delete the saved “AirPort network password” entry from Keychain Access.
Cannot access router login page	Wrong gateway address or not connected to the network	Double-check the Router/Gateway IP, connect to the Wi-Fi or use Ethernet, and try again in a different browser.
Wi-Fi disconnects after saving new password	Router still applying changes	Wait 1-2 minutes, turn Wi-Fi off and on on your Mac, or reboot the router if it seems stuck.
Incorrect password error despite typing correctly	Case sensitivity, extra space, or wrong band connected	Retype slowly, check caps lock, ensure you are connecting to the correct SSID, and verify the password in router settings.
Router login rejected	Wrong admin credentials	Try default details from the label. If changed and unknown, consider a controlled factory reset only as a final option.
Some devices won’t connect after change	Saved outdated profile	Forget the network on those devices and manually join with the new password.

Extra Tips for Stubborn Issues

• Use Ethernet temporarily: If Wi-Fi is unreliable while changing settings, connect your Mac directly to the router with Ethernet to log in safely.
• Restart in order: After changes, restart your Mac, and if needed, power cycle your router by unplugging it for 30 seconds before plugging it back in.
• Check for multiple networks: Some locations have extended networks with similar names. Make sure your Mac is joining the exact network you just updated.

Comparing Ways to Manage Network Access

Not every situation calls for changing the entire Wi-Fi password. Depending on your goal, there are different approaches you can take from your Mac-adjacent workflow. This comparison can help you decide the right route.

Method	When to Use	Effect on Devices	Level of Control
Change router Wi-Fi password	Security concerns, long-term rotation, or removing unknown users	All devices must reconnect with the new password	Highest control over the entire network
Use a guest network	Giving temporary access to visitors without sharing your main password	Only guest devices use it; main devices remain on the original network	Great for controlled, limited access
Forget and reconnect on Mac only	Fixing local connection errors after a password change	Only affects your Mac	Local fix, no change to the network itself
Block devices via router	Want to remove a specific device without changing the password for everyone	Only blocked devices lose access	Targeted, but depends on router features

For most people looking into How to Change Wifi Password in Mac?, changing the router password is the correct and most secure option, with forgetting/reconnecting on the Mac being the follow-up step.

Frequently Asked Questions

Can I change my Wi-Fi password directly from System Settings on my Mac?

No. macOS System Settings does not have an option to change the Wi-Fi password of your network. The password must be changed from your router’s admin settings page, which you access through a web browser on your Mac.

Will changing the Wi-Fi password kick everyone off?

Yes. Once you apply the new password at the router, any device previously connected with the old password will be disconnected. They will need to enter the new password to reconnect.

Do I need to change both 2.4GHz and 5GHz passwords separately?

Not necessarily. Many routers allow you to use the same password for both bands under the same SSID, or you can treat them as separate networks. If they are split into two different network names, each will need its own updated password if you change them. If they share one network name with band steering, updating it once is usually enough.

What should I do if I forget my router admin password?

If you cannot log into the router dashboard, try any custom credentials you might have used. If none work, your only safe way forward is a factory reset of the router using its physical reset button. After resetting, you can log in with the default credentials printed on the router and set everything up again, including a new Wi-Fi password and new admin login.

Is it safe to change my Wi-Fi password from a public browser or network?

No. Always change your router settings while connected to your own local network, ideally with a direct Ethernet connection or your own trusted Wi-Fi before you change the password. Avoid doing this from public Wi-Fi or on shared, untrusted networks.

How often should I change my Wi-Fi password?

There is no fixed rule for everyone. For most home networks, changing it once every 6 to 12 months is reasonable as a precaution. However, you should change it immediately if you suspect unauthorized access, lose a device that had access, or share access with someone you no longer trust.

Will updating the password affect my VPN or other network settings on my Mac?

Usually, no. Changing your Wi-Fi password only affects your wireless connection. VPNs, proxy settings, DNS configurations, and other network profiles on your Mac will remain intact. You may just need to reconnect your VPN after switching to the newly connected network.

My Mac says “Incorrect Password” even after updating Keychain. What now?

Try forgetting the network entirely from System Settings > Network > Wi-Fi > Advanced, removing any saved entry from Keychain Access for that SSID, restarting your Mac, and reconnecting from scratch with the new password. Also confirm the password is correct by checking it directly in your router settings page.

Conclusion

Learning How to Change Wifi Password in Mac? comes down to remembering one simple truth: your Mac is not the source of the password, your router is. By logging into your router’s admin interface, updating the Wi-Fi passphrase, and then updating the saved credentials on your Mac through forgetting or Keychain cleanup, you can complete the entire process with confidence.

Beyond just changing the password, taking a few extra minutes to create a stronger passphrase, update your router admin login, enable a guest network if available, and review connected devices will go a long way in keeping your network secure. With the step-by-step instructions, troubleshooting table, and best practices covered in this guide, you now have everything you need to keep your wireless network safe, controlled, and up to date from your Mac.