Qwiklabs is a third party tool for Coursera. So when you click on the open tool button from Coursera it will redirect you to the Qwiklabs login page for LTI enrollment. You need to add your Coursera credentials to complete the LTI enrollment.
Follow these steps in order to take a lab:
Log out from your Coursera and google account from the browser windows.- Clear all caches and close all the browser windows.
- Restart the browser and go to coursera.org
- Log in to Coursera. Find your lab and click the "Open Tool" Button.
- Open tool button will redirect you to the Qwiklabs sign-in page where you need to log in with your registered Coursera credentials for the LTI enrollment. (Sign in page comes sometimes while accessing the Coursera lab)
- You will get redirected to the actual lab page, where you will see the Start Lab button to start the lab.
Please make sure you are not logged in to your personal Google/Gmail account in the same browser where you are going to start the lab. (Prefer Incognito mode in the latest version of Chrome browser to start the lab).
If you face an error like "Invalid email or password" then please reset your password from https://googlecoursera.qwiklabs.com/users/password/new and try login again. You will receive a link on the email id with which you will be able to change your password.