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Asus RT-AC88U Troubleshooting Manual
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Asus RT-AC88U Troubleshooting Manual

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ASUS Wireless routers trouble shooting
guide v2.6
1. Wireless network abnormal：
Computer cannot find wireless router
1. Confirm your wireless adapter in computer is turned on
2. Check whether your wireless adapter can search for the wireless SSID nearby.
3. Confirm the SSID and password you key in are correct

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Summary of Contents for Asus RT-AC88U

  • Page 1 ASUS Wireless routers trouble shooting guide v2.6 1. Wireless network abnormal： Computer cannot find wireless router 1. Confirm your wireless adapter in computer is turned on 2. Check whether your wireless adapter can search for the wireless SSID nearby. 3. Confirm the SSID and password you key in are correct...
  • Page 2 4. Check your router is NOT set to Hide SSID What can I do if I forgot Wi-Fi password? 1. Set up your wireless router via wired connection...
  • Page 3 2. Enter router setting page (Key in setting page account and password) 3. Reset your password of router Please go to [Wireless]>[General] ※ "WPA2-Personal" is recommended to use since it's the most safe encryption way...
  • Page 4 4. Click Apply to save your setting. Computer cannot access to Internet through wireless connection to router 1. Confirm whether SSID and password are correct...
  • Page 5 2. Confirm that computer can search for router SSID 3. Check if your wireless adapter can obtain IP automatically To obtain the IPv4 IP settings automatically, click Obtain an IP address automatically. Click OK when it's done.
  • Page 6 4. Confirm if it can successfully access to Internet via wired connection...
  • Page 7 5. Check whether the wireless LED of router is lighting normally or not 6. Check whether you enabled the Radio function 7. Check whether the other wireless devices have the same symptom/issue. Back to contents WiFi signal is often disconnected 1.
  • Page 8 3. Please make sure no disturbances around router which could impact wireless signals Ex: Microwave, cordless phone, power box…etc. 4. Please make sure no resistance around router which could impact wireless signals Ex: Iron cabinet, iron door, Concrete walls, sealed cabinet. Put router on the ground or behind sofa…etc.

  • Page 9: Power Led Flashing

    Power LED flashing Please follow below steps to operate Rescue mode to fix this problem (1) Download and install utility Go to ASUS global website and key in model name 1. Click [Support] 2. Click [Driver & Tools] 3. Select OS 4.
  • Page 10 ZIP file will be saved to indicated location Find ZIP file and unzip it. Double click to install. (2) Change the setting of adapter 1. Connect computer to router via wired connection 2. Click [ Start ]→ [ Control Panel ]→ [ Network and Internet ]→ [ Network Connections ]→Click[Change adapter settings ]→...
  • Page 11 3. Release the Reset button when the [Power LED] at the front panel start flashing, which indicates that wireless router is in the Rescue Mode 4. [Start ]→ [All programs ]→[ASUS utility ]→ [RT-AC87UWireless Router ](Depends on different model name)→「Firmware Restoration」...
  • Page 12 6. When [Power LED] keeps stable lighting ,you can press [Reset button ] to restore it to default setting After executing Rescue mode, please go to [Start]→ [Control Panel]→ [Network and Note: Internet]→ [Network Connections]→Click[Change adapter settings]→ [LAN ]→ Right click [Properties] →...
  • Page 13 2. Check if you enabled the Radio function on setting page 3. Please make sure the router firmware is the latest one. 4. Restore router to default setting There is a reset button at the back of router. When device is energized, press Reset button (around 5 secs) until Power LED start flashing then release reset button.
  • Page 14 Abnormal WAN LED 1. Please make sure the firmware of router is the latest one. 2. Please confirm that your router has correct WAN connection.(refer to below)
  • Page 15 3. Please confirm with your ISP that your network cable is normal 3. Internet access abnormal： Failed accessing to internet through router Failed access to Internet through router 1. Please confirm your router has correct WAN connection.(refer to below)
  • Page 16 2. Please make sure your adapter is set to obtain IP automatically.
  • Page 17 3. Confirm that your computer can access to Internet through other network environment 4. Please confirm your ISP Internet settings and related information Remark：It is recommended to survey what kind of ISP providers in each country and information about how to access to Internet by each ISP to help user complete setting. Ex：Taiwan - Chunghwa Telecom Internet connection type：PPPoE / Static IP Notice：PPPoE account is 8 numerical +@hinet.net...
  • Page 18 7. Restore your router to default setting The Reset button is at the back of router. When device is energized, press Reset button (around 5 secs) until Power LED start flashing then release Reset button for its reboot. ※Notice：If router is restored to default ststus, then you need to reset your information 8.
  • Page 19 1. Please go to compatibility list for printer server on Global website and check if router supports user's printer model Printer Support List：https://www.asus.com/event/network/Printer_Server/ 2. Please confirm router has the latest firmware version 3. Please check you have completed and operated printer utility normally.
  • Page 20 1. Please go to “Plug-n-Share Disk Support List”on global website to check if user's USB HDD disk format and partition size is supported. Plug-n-Share Disk Support List： http://event.asus.com/2009/networks/disksupport/?_ga=1.43556709.1717103240.1398267030 2. Please make sure router has the newest firmware 3. Please plug HDD to computer to see if it can normally use.
  • Page 21 1. Please go to “3G/4G USB Adapter Support List” to see if router support user’s 3G/4G USB Adapter 3G/4G USB Adapter Support List：https://www.asus.com/event/networks_3G4G_support/ 2. Please make sure router has the newest firmware. 3. Please make sure settings of 3G/4G USB Adapter is correct...
  • Page 22 Cannot use smart phone to share internet through router 1. Please go to “Mobile Tethering Support List” to see if user’s smart phone is supported or not Mobile Tethering Support List： http://event.asus.com/2013/nw/mobile_tethering_support/?_ga=1.23114362.1717103240.139826 7030 2. Please make sure router has the newest firmware...
  • Page 23 3. Please confirm your smart phone setting Smart phone setting>>Setting >> connection and network >>Enable USB connection 4. Please confirm setting of USB tethering is correct 5. Wireless router GUI abnormal：...
  • Page 24 Cannot enter setting page Cannot update firmware Firmware update failed Why can't I enter the setting page? 1. Set up your wireless router via wired connection 2. Please make sure your adapter is set to obtain IP automatically...
  • Page 25 3. Please confirm web browser did not set up Proxy 4. Try to use Device Discovery to find your wireless router Desktop：Start>>All Programs>> ASUS Utility >>Model name >> Device Discovery 5. Restore router to default setting then try again to open setting page.
  • Page 26 Cannot update firmware Please follow below steps to operate rescue mode to fix this problem (1) Download and install utility Go to ASUS global website and key in model name 1. Click [Support] 2. Click [Driver & Tools] 3. Select OS 4.
  • Page 27 ZIP file will save to specified location Find ZIP file and unzip it. Double click to install. (2) Change the adapter setting 1. Connect computer and router via wired connection...
  • Page 28 3. Release the Reset button when the [Power LED] at the front panel start flashing, which indicates that wireless router is the rescue mode 4. [Start ]→ [All programs ]→[ASUS utility ]→ [RT-AC87UWireless Router ](Depends on different model name)→「Firmware Restoration」...
  • Page 29 IPv4 to [Obtain an IP address automatically] Firmware update failed Please follow below steps to operate Rescue Mode to fix this problem (1) Download and install utility Go to ASUS global website and key in your model name...
  • Page 30 1. Click [Support] 2. Click [Driver & Tools] 3. Select OS 4. Select [Utilities] 5. Find ASUS rescue mode utility 6. Click [DOWNLOAD] to download...
  • Page 31 ZIP file will be saved at specified location...
  • Page 32 Find ZIP file and unzip it. Double click to start installation. (2) Change the adapter setting 1. Connect computer to router via wired connection 2. Click [Start]→ [Control Panel]→ [Network and Internet]→ [Network Connections]→Click[Change adapter settings ]→ [LAN]→ Right click [Properties]→ Click [Internet protocol version4(TCP/IPv4) ]→...
  • Page 33 3. Release the Reset button when the [Power LED] at the front panel starts flashing, which indicates that wireless router is in the Rescue Mode 4. [Start]→ [All programs]→[ASUS utility]→ [RT-AC87UWireless Router ]( Depends on different model names)→[Firmware Restoration] 5. Enter [Firmware Restoration], click [Browse] to choose the firmware you want to...
  • Page 34 6. When [Power LED] keeps stable lighting ,you can press [Reset button ] to restore the device to default setting P.S. After executing Rescue Mode, please go to [Start]→ [Control Panel]→ [Network and Internet]→ [Network Connections]→Click[Change adapter settings]→ [LAN ]→ Right click [Properties] →...