User is unable to open adobe forms on MSS

Hello,

I have a user who is unable to view/open adobe forms. She has acces to mss and she can see the link to the forms, but when she clicks on it she is unable to view them. The rest of the users can see them. Even this user could see them before, but now she can't. Does anyone have an idea what the issue could be? Is it security related? Or do I need to check some settings? Kindly let me know..

Thanks,

Salman