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Gisella WodziszGisella Wodzisz 

dreamhouse challenge

The hands on challenge to install Dream house app is not working. It does not find my trailhead playground and yes, I am logged in.  The app will install on my SF Org! 
Hi Gisella,

Did you take a look at this page (https://trailhead.salesforce.com/en/modules/trailhead_playground_management/units/install-apps-and-packages-in-your-trailhead-playground)? When you install a package, if you are logged into more than one org (production and Trailhead Playground, for example), it can be ambiguous for the AppExchange which one it should go into.  The link shows you how to make it unambiguous.  Hope that helps!

Doug NilesDoug Niles
I had problems with this one as well. To resolve, when prompted to log in, I selected the "Use Custom Domain" in the lower right corner, then copy/pasted the domain name from the URL of the Trailhead. 
Amit Chaudhary 8Amit Chaudhary 8
Please check below post for same issue
1) https://developer.salesforce.com/forums/ForumsMain?id=9060G0000005M75QAE

Installing a package or app to complete a Trailhead challenge
1) https://force.desk.com/customer/en/portal/articles/2710899-installing-a-package-or-app-to-complete-a-trailhead-challenge?b_id=13478

Let us know if this will help you