Phplist login admin problem

Hi there,
I am having a problem.
I cannot login to the admin dashboard. When I try to login I can see the admin dashboard flash open quickly and then back to the login page.

My phplist installation is 3.6.10.

Can anyone help me fix this?

Thanks.

Hi Aldebaran,

Did you try this in another browser?
Maybe allow cookies.
Sometimes I use a private browser window.
Hard to say why it fails.

Peter