The default password for all Linksys E900 routers is admin. This password is case sensitive, as with most passwords. Some routers don't require a username when logging on with the default credentials, but on the E900, it's admin, the same as the password. This router's default IP address is the same as most Linksys routers: 192.168.1.1.Linksys
The device model number is E900 but is often marketed as the Linksys N300 router. There's only one hardware version of this router, so all E900 routers use the same information.
Help! The E900 Default Password Doesn't Work!
If the default username or password for your Linksys E900 router doesn't work, then it means they were changed after the router was set up. Changing the default information means it's easier to forget the new password!
To restore the Linksys E900 router default username and password, reset the router to factory defaults:
Resetting a router isn't the same as restarting a router. Resetting removes custom software settings (such as the password and Wi-Fi information) and returns the router to its factory default settings. Restarting simply shuts it down and powers it back up.
Plug in the router and turn on the power.
Flip it over on its top so that you have access to the bottom.
With a paperclip or other small and sharp object, press and hold the Reset button (it's accessible through a tiny hole on the bottom of the router) for 5 to 10 seconds. During this time, the Ethernet ports on the back flash simultaneously.
Wait 30 seconds after resetting the Linksys E900 router to give the software time to reset.
Remove the power cable from the power port on the back of the router, wait 10 to 15 seconds, then plug the cable into the router.
Wait 30 seconds to give the router time to fully boot back up.
Make sure the network cables are still attached to the back, then turn it over to its regular position.
With the settings restored, use the http://192.168.1.1 default IP address and the admin username and password to access the configuration settings.
Change the router password and the username to increase the security of the router. Save this new information in a free password manager to make it easy to find.
See page 61 of the Linksys E900 manual (linked at the bottom of this page) to learn how to back up and restore the router custom configurations. Back up the wireless network settings, DNS server settings, and other settings in case the router must be reset in the future.
Help! I Can't Access My E900 Router!
You have to know the IP address of the router before you can log in to it, but if the IP address was changed to something else, then using the default http://192.168.1.1 address won't work. To find the Linksys E900 IP address without resetting the router, you'll need to know the default gateway of a computer that's connected to the router.
Linksys E900 Firmware & Manual Download Links
The Linksys website has the E900 manual, which gives all the details about this router, including the information from above. It's there you'll also find the most up-to-date firmware version and Linksys Connect Setup software.
The manual is a PDF file, so you need a PDF reader to open it.