List of common router issues

What are the common issues with Linksys Smart Wi-Fi Routers and Linksys Wi-Fi Routers?
The quickest and easiest workaround for most issues concerning Linksys routers is to powercycle the device.  To do this, power OFF the router, unplug the power cord and wait for 10 seconds before plugging it back in.
If the problem still persists after performing a powercycle, you may then proceed with other workarounds for the issues listed below:
Dropping/Intermittent wireless connectivity
Slow downloads
Slow upload
Forgot the wireless settings of the router
Unable to access the router’s web-based setup page

Dropping/Intermittent wireless connectivity
There are many causes why you experience poor signal or connection.  Below are the different ways of solving these: 

Cause 1:  Your intermittent wireless connection may be caused by the kind of setup you have in your home or office.
Solution:  The placement of your wireless device is the key to having a good signal from your router.  Here are some tips to avoid dropping wireless connections:

  • Place your router in an open and strategic area since this device uses radio waves to communicate. 
  • Do not place your wireless device or computer right next to the router because the 18-inch radius around the router is a wireless dead zone.
  • Ensure that the distance between the router and the wireless device is three (3) meters apart as this is the area with the best signal strength. 

Cause 2:  An intermittent connection may also have something to do with the Internet Service Provider (ISP) you are subscribed to. 
Solution:  To test if you are having connectivity issues with your ISP, connect one (1) computer directly to the modem using an Ethernet cable and observe the connection for a few hours.  If you're still getting connectivity problems, contact your ISP for technical support.
Cause 3:  The wireless security mode you have set may also affect the speed and strength of your wireless signal.    
Solution:  To resolve wireless speed and strength issues, it is recommended to use WPA2 Personal.  If you wish to attain optimal Wireless-N speeds set your wireless security to WPA2-AES or Open.  On the other hand, setting your wireless network to WEP security will reduce the network speed down to G-mode.  You can check the wireless security mode that your router is using on the web-based setup page.
NOTE:  Use Open only if you really intend to set up a public wireless network or implement MAC filtering.  For maximum security while ensuring compatibility with most wireless devices, do not use special characters in WPA passphrases.  Instead, use a combination of upper and lower case letters/numbers.
Cause 4:  Your router’s firmware is outdated. 
Solution:  If the issue still exists after performing the steps above, this could mean that the router needs a firmware upgrade.  However, if the router is currently using the latest firmware version, you may perform a firmware re-flash.  The re-flash process lets you update your firmware with a similar version that you are currently using. 
For instructions on upgrading or re-flashing your firmware, click here.

Cause 5:  Your router may be infected with the Moon Malware.
The Moon Malware can be manifested as having unusually slow Internet connectivity on all devices.  To know more about the Moon Malware and its resolution, click here.

Listed below are some other fixes that you can try to resolve dropping wireless connections.  However, some configurations indicated here are designed for advanced users only.  Any incorrect settings may result to poor wireless performance.

Workaround 1:  Disable the UPnP feature of the router
To do this, go to the Administration > Management tab on the web-based setup page.  Look for the Upnp section and select Disabled.  Click Save Settings.


Why this works:  Universal Plug and Play (UPnP) allows the automatic configuration of a device’s settings once it connects to your router.  If UPnP is enabled, your router will try to adjust to the new wireless client or may open or close several ports.  UPnP should be disabled if you have devices connected to the network that needs port forwarding or triggering.
Workaround 2:  Change the wireless channel of the router

To do this, go to the Wireless > Basic Wireless Settings tab on the web-based setup page.  Change the Channel to 1, 6 or 11 then, click Save Settings.


Why this works:  In the U.S., the preferred wireless channels are 1, 6 and 11 since they’re considered non-overlapping channels.  Changing the channel authorizes your router to connect to a frequency band that has reduced interference and crowding.
Workaround 3:  Change the MTU size of the router

To do this, go to the Setup > Basic Setup tab on the web-based setup page.  Under the MTU section, set MTU to Manual and change the value.  To determine the optimal MTU size for your setup, click here.  Once done, click Save Settings.

Why this works:  The Maximum Transmission Unit (MTU) is the largest packet size permitted for Internet transmission.  If the automatic setting is too large for the connection, the connection might be unstable or you’ll experience packet losses.
Workaround 4:  Change the Beacon Interval, Fragmentation Threshold and RTS Threshold of the router

To do this, go to the Wireless > Advanced Wireless Settings tab on the web-based setup page.  Change the Beacon Interval to 50, Fragmentation Threshold to 2306 and RTS Threshold 2307.

Why this works:  The Beacon Interval is the gap before the router sends packet broadcasts to synchronize with your wireless devices.  Reducing this ensures that the router synchronizes more often, reducing signal drops.  RTS and Fragmentation Thresholds reduce packet losses which often occur on areas with a lot of interference.
NOTE:  If you are unable to see the Advanced Wireless Settings tab, you can manually add “/Wireless_Advanced.asp” after your setup page’s main setup page URL (i.e.  Take note that the settings on this page should not be changed unless you know their function.
Once you have saved your settings, you can now powercycle the router, reboot the modem and restart the computer.

Slow downloads
A slower-than-normal download may be due to the IPv6 feature on your computer.  One of the solutions may be disabling IPv6.  Refer to the technical support of your computer’s operating system for instructions on how to disable IPv6 on your computer.


Why this works:  The slow download is caused by the use of IPv4 as the default protocol in your network; the slower data transfer is rooted on the “translation” of the data into an IPv6 compatible form.
If the issue still exists after performing the steps above, you can also perform the following troubleshooting tips:

  • Isolate the issue by checking if your other computers have the same download speed.
  • Check if your computer has the same download speed when connected straight to the modem.
  • If the suggested solutions made no changes with the download speed, do the following in order: 

i.   Perform a firmware upgrade.  For instructions, click here.
ii.  Reset the router by pressing and holding the Reset button for 10 seconds using a pen or any pointed object.
iii. Reconfigure the router using your ISP’s connection:  Cable Internet service, DSL Internet service, Static IP account 

Slow upload
Linksys Smart Wi-Fi Routers and Linksys Wi-Fi Routers are known for their fast upload and download speeds, so if you experience a slowdown in your upload speed, you may need to set your router's Quality of Service (QoS).  This means controlling the priority of your network traffic, ensuring that the data you consider most important gets through faster. 
To learn how to set up QoS, check the link below:
Setting up QoS on a Linksys Wireless-N Router

Forgot the wireless settings of the router
In order to connect to the wireless network, you need to know its wireless settings.  These settings refer to the wireless network name (SSID) and wireless password/passphrase.  To check the wireless settings of your router, click here.  It is also recommended to take note of your wireless settings in a piece of paper to serve as your quick reference in case you forget it.  
Unable to access the router’s web-based setup page
The Linksys router’s web-based setup page can be accessed using a wired or wireless computer.  To do this, enter the router’s default IP address “” on your web browser’s address bar.  A user login will then appear asking you to enter a username and password.  You may leave the username blank and the password is admin.
However, there are times when you are unable to access the router’s web-based setup page; this may be because:

  • The router’s IP address has been changed
  • The router’s password has been changed
  • The router’s firmware needs to be upgraded
  • There is no network connection with the router
  • The computer’s firewall may be blocking the connection 

For specific details on what to do if you are unable to access the router’s web-based setup page, click on the article below:
Encountering difficulties accessing the router's web-based setup page

Was this support article useful?

Additional Support Questions?

Search Again


Linksys Premium Technical Support

For technical support beyond your warranty period, or for assistance with advanced features not covered by basic support, you have several options.  Learn More