Intermittent "Login Failed" message AnyConnect ASA5540

[Phill Hodges]

So I've been using the AnyConnect client for my ASA5540 for a few months now, mostly with success. I am set up for both local authentication as well as RADIUS through my NPS server. Most of the time I am able to connect with no issue at all, however occasionally myself and other users receive a "Login Failed" message and the client will refuse to authenticate. I am 100% certain my credentials are valid and my account is not locked out. I have not made any changes to my firewall or my NPS and I am currently unable to log in with either authentication method.

Why is it failing to log in sometimes? What can I do to troubleshoot this?

EDIT: One of my users that was experiencing this issue can now log in. I am still receiving the Login Failed message.

EDIT2: As of this morning, I am now able to log in. I have not made any changes to my firewall, NPS, anything that would affect this.

[doug.watson]

We have this problem too. We are running on a 1 year old ASA 5515 HA Pair.

I created a locally authenticated profile after the first time I ran into this.

But it turns out that none of our profiles, either Local or AD authenticated work when this happens. We get login failed immediately. Is this a bug?

I will update with our ASA software version on Monday.

[Richard Bradfield]

Can you share the AnyConnect log for the failed connection

[doug.watson]

sorry for the long delay, here is my Anyconnect log. the failed logins were from back on 12/4