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Debra SamsomDebra Samsom 

My Trail Head Developer Console will not load, says page not responding. Trying to complete Lightning Experience Rollout Specialist

Using Chrome, brave-badger-325638-dev-ed.lightning.force.com.
Best Answer chosen by Debra Samsom
sfdcMonkey.comsfdcMonkey.com
here are some solution for it :
1. clear your browser cache,logout and again login and check again.
2. try in different browser
3. open developer console, which usually open in new window and quickly copy the new window (developer console) URL and close new window (which is not not responding), after that in your browser open new tab and paste the developer console URL and load it, now it will be work here.

  Kindly let us know if it helps you, & close this query by selecting best answer if you got your solution, so this will helps other in future

All Answers

sfdcMonkey.comsfdcMonkey.com
here are some solution for it :
1. clear your browser cache,logout and again login and check again.
2. try in different browser
3. open developer console, which usually open in new window and quickly copy the new window (developer console) URL and close new window (which is not not responding), after that in your browser open new tab and paste the developer console URL and load it, now it will be work here.

  Kindly let us know if it helps you, & close this query by selecting best answer if you got your solution, so this will helps other in future
This was selected as the best answer
Debra SamsomDebra Samsom
I went into incognito mode (Chrome) and it worked. Thanks for responding.
sfdcMonkey.comsfdcMonkey.com
yep, i have to face this problem too many times, and above solutions work for me. and incognito mode as work same as clear browser cache or using a new browser, :)

 if you got your answer, kindly close your query with choosing best answer so it will remove from unsolved question
Thanks