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Tarun Gupta 33Tarun Gupta 33 

Not able to login to Trailhead,it displays 'URL No Longer Exists'

Shaijan ThomasShaijan Thomas

https://developer.salesforce.com/trailhead - Hope you are using this

Shaijan
KaranrajKaranraj
Are you using any separate URL to login other than going to https://developer.salesforce.com/trailhead
Tarun Gupta 33Tarun Gupta 33
i'm using following link:
https://developer.salesforce.com/trailhead/force_com_introduction/point_click_business_logic/formula_fields
 
Shaijan ThomasShaijan Thomas
its working for me. 
Shaijan
Jitender PaddaJitender Padda
it happened to me also once or twice, try to close the page and then again go from this link - https://developer.salesforce.com/trailhead
Tarun Gupta 33Tarun Gupta 33
I have tried so many times but still its not working!
Carmel Patterson 12Carmel Patterson 12
I am having the same issue. I have tried multiple times, but I am unable to login, and so I can't complete any of the challenges.
Carmel Patterson 12Carmel Patterson 12
Ok, finally fixed it. I had to log out of all salesforce instances, then I was able to login ok.
Ashish Tondare 6Ashish Tondare 6
Hi All,

Even i am facing same issue. Every time i log in to Trailhead it takes me to developer.salesforce.com/500. Please help me.

Regards,
Ashish
Christen WallChristen Wall
I know this is an older post, but I thought I'd mention what worked for me. I was having the same issue, receiving "Not able to login to Trailhead,it displays 'URL No Longer Exists'" when I tried to log in via the popup window provided by a Salesforce link. I also had multiple tabs open to different help windows. Eventually I realized that some of my tabs were logged in and some were not. If I tried to login on the tabs where I was not logged in already, I received the error; however, if I just refreshed those tabs, the login information perpetuated and I was able to move forward with no issues.

TL:DR If you have multple tabs open and are logged in to some and not others, try refreshing the ones where you are not logged in.