Workstation Credentials after Remote Desktop

Hello,
I am facing an issue with a SSO Captive Portal whenever I log into a server using RDP. While I can login normally using my login username, whenever I log into a server using Administrator credentials, it seems that IE uses the Administrator credentials instead
of the logged user.
Is there a way to identify the reason why IE gets the Admin credentials?
MCSE: Server Infrastructure

If you launched IE using the run as another user option then it is normal that the IE will launched under the administrator session / context. If this is not what you did then I would recommend that you reset IE settings and try again: https://support.microsoft.com/kb/923737?wa=wsignin1.0
More if you ask them in IE forum: https://social.technet.microsoft.com/Forums/ie/en-US/home?category=internetexplorer
This posting is provided AS IS with no warranties or guarantees , and confers no rights.
Ahmed MALEK
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