Having come back of f holiday we have found that we cannot logon to any of our internal hosted php sites.

When we logon as a user it just shows the login box with no errors. If we logon as a user we knows does not excist then it shows an error of unkown user etc.

Before holidays we had some issues with window 2008 r2 and our local tech have done some updating of windows but they cannot help as far as this problem is concern.

Can any one help advise us where to look for a problem as nothing is appearing in logs as an error.