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Mykola OliinykMykola Oliinyk 

Error: Faraday::ConnectionFailed. Message: Failed to open TCP connection to res...443


Hello!

I can't finish the trailhead
https://trailhead.salesforce.com/content/learn/modules/identity_login/identity_login_my_domain

due to the next error:
There was an unhandled exception. Please reference ID: XNOIWBUC. Error: Faraday::ConnectionFailed. Message: Failed to open TCP connection to resourceful-panda-ujhuef-dev-ed.my.salesforce.com:443 (getaddrinfo: Name or service not known)

Moreover, can't check any other modul in this DE Playground:
oliinykmyk@resourceful-panda-ujhuef.com
:(

It happened after changing My Domain to the next:
consultkiev-dev-ed-dev-ed

I'd waited for 6 hour than checked again - the same error...

Have any idea on this issue? Or it's better to create new DE Playground (is yes - HOW?) and don't change My Domain?

Thank in advance!
AbhishekAbhishek (Salesforce Developers) 
Hi,

For all the Trailhead issues please report it here,

https://trailhead.salesforce.com/en/help?support=home

So that our trailhead support engineers will look into it and get back to you.

Kindly let me know if it helps you and close your query by marking it as solved so that it can help others in the future. It will help to keep this community clean.

Regards,
Salesforce Support.