I came across couple of times that the LAB hasn’t successfully kick in. If that happens to you don’t panic.
You should be able to access vCentre Server appliance using the credentials supplied in the lab and start vSphere web client service.
Quick steps if you not sure how to.
If your Lab status says “waiting for web client” you will not be able to access sphere web client using firefox:
And you’ll notice that the lab isn’t Ready yet:
Go to vCentre Server Appliance to start the web client service:
See the service is not running;
Try the web client URL again: (it may take a while to initialize)
And here it is: