Users having to login twice?

[blogger419]

I am having a weird problem on my forum. The first time users try to login it fails, on the second attempt it works, even when using a saved password. Any ideas?

[JBlaze]

Are you getting any errors in your error log? If so, what are they?
Are your users getting an error other than "login failed"? If so, what are they?
What mods do you have installed?
When did this issue begin occurring, and what have you changed since then?

[Illori]

http://www.simplemachines.org/community/index.php?topic=447598.0 might apply

[Zwerko]

Hi. I have the same problem, old solution did not help, already implemented in latest version 2.0.11.  But maybe I can narrow down cause, for now I have this problem only in IE11. Chrome works ok. At work I have win10 and Edge, I will check there....