Install of HDP sandbox on Hyper-V VM is fine but when you start using the browser to do tests with various tools, you start seeing problems immediately! I know this is not just me as I have seen others report similar errors. Here are the details of my problems. I hope someone looks into this and helps us all out 
These tool links work fine:
ABOUT, PIG, JOB DESIGNER, HUE SHELL, USER ADMIN, HELP
Following tool links do not work:
BEESWAX (HIVE UI) and HCATALOG take 2-3 minutes before throwing error Could not connect to sandbox.hortonworks.com:9083
FILE BROWSER and JOB BROWSER links take good 2-3 minutes before throwing error urlopen error [Errno 110] Connection timed out
OOZIE EDITOR/DASHBOARD takes about a minute and errors with An error with Oozie occurred. The Oozie server is not running: <urlopen error [Errno 110] Connection timed out>