I am unable to check for software updates within the PI 3.0 interface through our internet proxy. The page displays the error "There was a problem connecting to cisco.com from the Prime Infrastructure Server". I have valid proxy settings, and the Test Connectivity button within the Administration / Settings / System Settings > (General) Support Request results in three Successful tests. Seems like an obvious recurrence of CSCum37804, but 3.0 is not mentioned in the bug report. Is anyone else having this problem?
This was indeed a problem with the proxy settings. After adjusting, the update check was successful.