Hi Gregu, I too encountered this issue. On mine though, I had intervlan routing enabled for VLAN 1 tagged-no dhcp,10 untagged w/dhcp. Having a VLAN 10 dhcp address, I got that Forbidden message. I was about to reset it when I came across your post. I set a static from VLAN 1 and I was able log in. I disabled and reenabled intervlan routing feature and I was able to log in from either VLAN. Thanks for the heads up!
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