Why is Context.User null on ASP.NET Master Page now?

Question

I just swiched to a new ASP.NET host and it seems it is behaving differently. In the code for the master page it is attempting too do some different logic for authenticated users by this.

if (Context.User.IsAuthenticated) {
}

But the Context.User object is null. But it's only null on the master page. If I use it on the regular page it works.

if (User.IsAuthenticated) {
}

Does anyone have any idea what the problem might be? I might not have much control over the hosting environment but is there a different way I can get this information in the master page?

ADDITIONAL INFORMATION:

It seems that the Context.User or Page.User object is null in both

• Dashboard.aspx (which users the master page Page.master) AND
• Page.master

But it is not null in

• TestUser.aspx (which does not use any master page)

Answer 1

Why don't you use:

Page.User.IsAuthenticated

on the master page?