function readOnly(count){ }
Starting November 20, the site will be set to read-only. On December 4, 2023,
forum discussions will move to the Trailblazer Community.
+ Start a Discussion
Saroja MuruganSaroja Murugan 

trail head error - Challenge not yet completed

Hi All,

In the below trail i received the error.

Admin Beginner-> Lightning Experience Customization-> Create Custom Buttons and Links 

Error Message
Challenge Not yet complete... here's what's wrong: 
There was an unexpected error while verifying this challenge. Usually this is due to some pre-existing configuration or code in the challenge Org. We recommend using a new Developer Edition (DE) to check this challenge. If you're using a new DE and seeing this error, please post to the developer forums and reference error id: MIBJCQNW

Thanks in advance
SandhyaSandhya (Salesforce Developers) 

Try to logout once and then login again to check the challenge.Also refer below link.

Best Regards,
Saroja MuruganSaroja Murugan
Hi sandhya,

Thanks for your reply.

Im still getting the same error. I have tried the both ways as you told.

See the screen shot 

User-added image