Unable to connect dell xps 802.11ac laptop to cisco 1250 AP?

[untouchable00xx]

I have a new dell xps 15inc with the dell 802.11ac wireless card but it will not connect to the Cisco 1250 AP, however it connect to other APs just fine. I wondering if the Cisco 1250 AP is just to old and if there is any documentation proving this.

Thanks ahead of time.

[Leo Laohoo]

On the dell wireless card, what happens if you force the card to use 802.11 a/b/g only and disable 802.11n/ac?