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Register Failed / Forbidden: Bad Auth on your Yealink display

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Register Failed / Forbidden: Bad Auth on Yealink display:

 

Description: You are unable to make and receive calls and your phone displays Forbidden: Bad Auth. In the Yealink settings page, it says Register Failed in Accounts.



STEP 1: CHECK INTERNET CONNECTIVITY

  • Check if you can browse different websites
  • Check if the DSL and PPP / Internet light is solid on your router / modem

 

        ROUTER / MODEM LIGHT STATUS:

        - DSL Off = no signal, call your ISP
        - DSL Flashing = trying to get signal, call your ISP
        - DSL Solid = has a good signal

         NOTE: On your router / modem it may show ADSL or DSL.



        - PPP / Internet Off = not authenticated, call your ISP
        - PPP / Internet Flashing = transmitting data
        - PPP / Internet Solid = successfully authenticated or registered

         NOTE: On your router / modem it may show PPP, Internet or .



STEP 2: Try rebooting your router / modem and phone

  • Check if you can hear a dial tone or if you can make outgoing calls
  • Check if the phone is still getting the same status



STEP 3: Re-enter username and password in the Yealink settings page

  • Press the OK button on your phone to get the IP Address (e.g. 192.168.0.234)







  • Type the IP Address on the address bar of your browser (e.g. Internet Explorer, Firefox, Chrome, Safari etc.) and press Enter on your keyboard




  • Type admin on both username and password in the pop-up dialogue box and click OK


 

 

  • Click on Account tab
  • Re-enter your username and password
  • Click Confirm


 


  • Wait for the page to refresh
  • Wait for Register Status  to display  "Registered"
  • You should now be able to make and receive calls without the error Forbidden: Bad Auth 



 

NOTE: If the phone is still getting the same status after following the steps above, proceed to next step:

STEP 4: Reset the phone to factory settings and manually reconfigure the phone

NOTE: We strongly recommend to call our support to help you on this procedure.


Click on the links below to see the steps:

How do I reset my Yealink phone to factory default?
How do I manually configure my Yealink phone?


REMINDER:
You can also download the attached PDF version of this tutorial.


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