After upgrading my router WRT160NL to the latest DD-WRT Firmware (1614), I was unable to connect my laptop to the router using wireless adapter. No matter what I did I was still getting the error
The settings saved on this computer for the network do not match the requirements of the network
I matched the security settings on the router and updated this on the laptop so that they were the same but the error would not go away. I tried rebooting; selecting the network and deleting it using the Merge or Delete Network Locations but the error still persisted.
Finally I removed all the wireless network connections on the computer and this resolved the issue. The following are the steps that I followed to resolve the issue:
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Click on the wireless icon that is on the system tray
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At the bottom of the pop-up click on Open Network Sharing Center.
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On the left hand side of the window that opens click on Manage wireless networks
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You will see a list of the wireless networks you have setup. Delete all the networks on the list
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Click on the wireless icon in the system tray again and double click on your home wireless network
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Type the password if any to connect to the network. At this point you should be able to connect and the error will be no more.