Can I change my Wi-Fi password at 192.168.100.1?

Only if your device is a modem-router combo that broadcasts Wi-Fi. In that case, log in at 192.168.100.1, open the Wireless settings, and change the password. If your device is a modem only, it has no Wi-Fi to change, and you use your separate router instead.

192.168.100.1 shows no Wi-Fi settings. Why?

Because your device is a modem, not a combo unit. The modem only handles the connection to your provider and shows diagnostics, while your Wi-Fi comes from a separate router. Change your Wi-Fi password on that router, usually at 192.168.1.1 or 192.168.0.1.

What is the login for 192.168.100.1?

It varies by manufacturer and provider. Common defaults are admin/admin and admin/password, but many devices use a unique login on the label, and some diagnostic pages need no login at all. Check the sticker on your device for the exact credentials.

How do I know if my device has Wi-Fi?

If the box your internet line plugs into is also the one broadcasting your Wi-Fi, it is a combo unit with Wi-Fi settings. If your Wi-Fi comes from a separate router, the 192.168.100.1 device is a modem without Wi-Fi to change.

My provider manages the device. How do I change the Wi-Fi password?

Some providers handle Wi-Fi settings through their own app or website rather than the device page. Check your provider's app or online account, where the option to change your Wi-Fi name and password is often available.

How to Change Your Wi-Fi Password at 192.168.100.1

If you want to change your Wi-Fi password and your device uses 192.168.100.1, the first thing to check is whether that device actually controls your Wi-Fi. 192.168.100.1 is usually a cable or fiber modem address, and some of these are modem-only units with no Wi-Fi to change, while others are combined modem-routers that do. This guide shows you how to tell the difference and change the password on the units that have Wi-Fi.

First, Does Your 192.168.100.1 Device Have Wi-Fi?

This is the key question, because it changes everything.

If your device is a modem-router combo, sometimes called a gateway, it both connects to your provider and broadcasts your Wi-Fi. In that case, 192.168.100.1 may let you change the Wi-Fi password directly.

If your device is a modem only, it just brings in the internet, and your Wi-Fi comes from a separate router connected to it. Here, 192.168.100.1 shows connection diagnostics with no Wi-Fi settings, because there is no Wi-Fi on the modem to change. You would change your Wi-Fi password on the separate router instead, usually at an address like 192.168.1.1 or 192.168.0.1. If you are unsure what this address is in the first place, our guide on what 192.168.100.1 is explains it in full.

An easy way to tell: if the device broadcasting your Wi-Fi is the same box that your internet line plugs into, it is a combo unit. If your Wi-Fi comes from a separate router, the 192.168.100.1 device is a modem.

How to Change the Wi-Fi Password on a Combo Unit

If your 192.168.100.1 device is a modem-router combo, here is how to change the Wi-Fi password.

Connect a device to the unit, over Wi-Fi or with an Ethernet cable.
Open a browser, click the address bar, type 192.168.100.1, and press Enter.
Log in. Credentials vary by manufacturer and provider. Common defaults are admin/admin or admin/password, but many units use a unique login printed on the label. Some pages need no login for viewing, but changing settings will require one.
Find the Wireless, Wi-Fi, or WLAN settings section.
Locate the Wi-Fi password field, often labeled Password, Passphrase, Pre-Shared Key, or Network Key.
Enter your new password, and confirm the security type is set to WPA3 or WPA2.
If the unit is dual-band, update both the 2.4 GHz and 5 GHz networks.
Click Save or Apply.

After saving, every device drops off the Wi-Fi and reconnects with the new password, so reconnect your phones, computers, and smart-home devices. For tips on picking a good one, see our guide on how to create a strong password.

If 192.168.100.1 Has No Wi-Fi Settings

If you log in to 192.168.100.1 and find only connection status and diagnostics with no wireless section, your device is a modem, not a combo unit. Your Wi-Fi is coming from a separate router, and that is where you change the password.

Find your router’s address by running ipconfig on Windows and reading the Default Gateway line, or checking your Wi-Fi network details on a phone. It is usually 192.168.1.1 or 192.168.0.1. Our guide on how to find your router’s IP address covers every device.
Open that address in a browser and log in to the router.
Go to the Wireless or Wi-Fi settings and change the password there, following the same kind of steps as above. Our full guide on how to change your Wi-Fi password walks through it for any router.

So if 192.168.100.1 gave you a page of signal levels rather than Wi-Fi options, that is expected, and the router is the device you need.

What to Do If You Cannot Log In or Save

The page will not load. Make sure you are connected to the device’s own network, not mobile data or a VPN, and that you typed digits only, 192.168.100.1.

The login is rejected. Try admin/admin and admin/password, then check the label on the device for a unique password. For provider-supplied equipment, the credentials may be in your welcome paperwork or the provider’s app.

There is no wireless section. Your device is a modem, so change your Wi-Fi on the separate router instead, as described above.

The password will not save. Most units require a minimum length, usually 8 characters. Use a longer password and avoid unusual special characters if it is rejected.

It is provider equipment you cannot fully access. Some providers manage Wi-Fi settings through their own app or website rather than the device page. Check the provider’s app if the device page will not let you make changes.

Wrapping Up

Changing your Wi-Fi password at 192.168.100.1 works only if that device is a modem-router combo with Wi-Fi, in which case you log in, open the Wireless settings, and update the password. If 192.168.100.1 shows only connection diagnostics with no wireless section, your device is a modem, and your Wi-Fi lives on a separate router at an address like 192.168.1.1. Either way, once you find the right device and its Wi-Fi settings, changing the password takes just a couple of minutes.