PDF Negative Color

Hey guys,

Having some trouble with Adobe Reader at the moment. My PDF files goes what it seems to a negative/inverted color (white text on black background). I tried everything on this earlier thread, but had no luck. https://community.adobe.com/t5/acrobat/my-pdf-files-are-suddenly-black-or-quot-inverted-quot-when-viewing-in-acrobat-dc/td-p/10083516?page=1

Accessibility settings is right with no boxes checked. I even tried unistalling it and reinstalling it. Also, by removing the Adobe folder in my C drive.

When I open the PDF in a web browser, I can see the PDF clearly, but when I open with Adobe Reader, the colors inverts. So, I assume it's a Reader issue.

Hopefully, someone has an answer to this question.

EDIT: I work as a Helpdesk and this user was having this issue for a while. We use Active Directory and the user has a domain account. I tried handing him a new laptop and even nuked his profile in the local machine, but had no luck.