I'm having this issue too, on a brand new Intel NUC7i7BNH with Intel® Wireless-AC 8265.
Please help! I can see the networks, just when I try and connect it says 'Network error: Operation aborted'.
Dmesg which may or may not be relevant:
Code
3.457004] iwlwifi 0000:3a:00.0: Detected Intel(R) Dual Band Wireless AC 8265, REV=0x230
[ 3.459036] iwlwifi 0000:3a:00.0: L1 Disabled - LTR Enabled
[ 3.459692] iwlwifi 0000:3a:00.0: L1 Disabled - LTR Enabled
[ 3.573172] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[ 3.573380] (NULL device *): hwmon_device_register() is deprecated. Please convert the driver to use hwmon_device_register_with_info().
[ 3.573394] thermal thermal_zone0: failed to read out thermal zone (-5)
[ 3.575713] iwlwifi 0000:3a:00.0: L1 Disabled - LTR Enabled
[ 3.575968] iwlwifi 0000:3a:00.0: L1 Disabled - LTR Enabled
[ 3.689598] iwlwifi 0000:3a:00.0: L1 Disabled - LTR Enabled
[ 3.689852] iwlwifi 0000:3a:00.0: L1 Disabled - LTR Enabled
[ 3.765534] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready