a user is having trouble logging in

[Laura_m_Conner]

All,

I have set up a user who needs help logging in to the web map through Portal. When he goes to the page, it prompts them to log in as usual, and then the page starts to load, but then it goes to a different login page.  I have checked his profile, and it is identical to others in his position. He is in a group that has permission to view the map. No one else in the origination is experiencing this problem.  Any help on the issue would be appreciated, as I don't know what to check next.   

portal 10.6.1

Thanks

Laura

[Laura]

How is the other page different and do his credentials work there?

[Laura_m_Conner · Accepted solution]

Laura,

The regular log in is a pop up window. The second log in was a page from Arc GIS. No his credentials did not work there either.   

His user was not set up to use set up to use system authentication. I re-did  his user and set him up for system authentication. He can log in now