Trying to remote desktop to a Windows 8 PC and receive the following error: To sign in remotely, you need the right to sign in through Remote Desktop Services. By default, members of the Remote Desktop Users group have this right. If the group you're in doesn't have this right, or if the right has been removed from the Remote Desktop Users group, you need to be granted this right manually.

You try to connect to a Windows 8 PC and receive the following error: To sign in remotely, you need the right to sign in through Remote Desktop Services. By default, members of the Remote Desktop Users group have this right. If the group you’re in doesn’t have this right, or if the right has been removed from the Remote Desktop Users group, you need to be granted this right manually.

If you have verified the obvious like turning off the firewall and making sure remote desktop is enabled then check the group policy. Group policies overwrite those settings and could be causing conflicts that you cannot see. This can either be a local group policy which you can check by running gpedit.msc. However, it could also be a domain policy which you need to run gpmc.msc from a domain controller. In my case someone had specified this setting and the group that they specified had been deleted. So remote desktop groups were being pushed down but with an invalid group.