SharePoint - Users constantly get prompted for userid and password

Fix - Set your browser trusted sites to https://intranet.uillinois.edu and https://mysite.uillinois.edu
Check to see if both url's are listed in your settings for Internet Explorer. 

If sites are NOT listed, you can add them as follows:

    Open Internet Explorer
    Click Tools>>Internet Options
    Click Security Tab
    Click Local Intranet
    Click Sites button
    Enter: https://intranet.uillinois.edu
    Click Add
    Enter: https://mysite.uillinois.edu
    Click Close
    Click OK