![]() Test-ComputerSecureChannel -Credential (Get-Credential) -VerboseĪdd the -Repair parameter to perform the actual repair use credentials for an account that's authorized to join computers to the domain. We may now use the Test-ComputerSecureChannel cmdlet. In an elevate command prompt type: nltest.exe /Server:ServerName /SC_Reset:DomainDomainControllerĪs of Server 2008 R2, the task is very simple.The account whose credentials you provided must be a member of the Local Administrators group. In an elevated command prompt type: netdom reset MachineName /domain:DomainName /usero:UserName /passwordo:Password.In an elevated command prompt type: dsmod computer "ComputerDN" -reset.Then re-join without un-joining the computer to the domain. In AD right-click the computer and select Reset Account. ![]() Instead of doing that we can just reset the secure channel. You’ll have to recreate all of that stuff from the excellent documentation that you’ve been keeping. Further if you had that computer in any groups or assigned specific permissions to it those are gone because now your computer has a new SID, so the AD doesn’t see it as the same machine anymore. Doing so is kind of a pain because it requires a couple of reboots and the user profile isn’t always reconnected. The classic way to fix this problem is to unjoin and rejoin the domain. These all stem from the same problem and that is that the secure channel between the computer and domain is hosed. The symptoms can be that the computer can’t login when connected to the network, message that the computer account has expired, the domain certificate is invalid, etc. Occasionally a computer will come “disjoined” from the domain. It’s not that we don’t know AD, it’s that we forget or miss new features. I suggest that everyone join a usergroup and/or a study group. In the real world we can’t all stop working until we replace/update all our client machines.Įither way I welcome all feedback, even if it’s negative.This trick comes to be via my Active Directory study group. Well you are entitled to your opinion I suppose, but some client’s simply don’t have the investment to update their client’s and have to disable features until that can be done. Also not all RDP clients are Windows, If this causes several thousand thin clients to go down at 0900 hrs on a Monday morning, do you disable NLA or update a thousand Linux based thin Wyse/NUC/iGEL/HP clients the that have no central administration? Please bear in mind this article was written two years ago, simply everyone didn’t have post RDP 6.1 NLA capable clients, and this will have been written at the time that NLA became a requirement. I do understand, and have outlined the cause of the problem. >Now, if you want NLA thats fine, make sure your RDP client has been updated, and you, and the target are domain authenticated, and can see a domain controller. Open Regedit > File > Connect Network Registry > Search for and select your target machine > OK. The drawback of this method is it usually requires a reboot (which we can do remotely, but if it’s a production server that will mean some downtime). And appreciate that you are here because you couldn’t fix it yourself, so you clicked on the link to come here, to read information that I’m providing for free, in my own time, to help you out. Well how about you have 500 linux based thin clients that use RDP software that does not support NLA? Before posting a criticism please take some time to work in, and support a few different environments guys. I’m really getting tired of people posting comments saying ‘This is a bad article’ and ‘I don’t understand’. This article was written at a time when clients may not have had up to date RDP clients that supported NLA, that’s no longer the case (If you are in a sole Windows environment, and you are updating your clients). Well the simplest way to get on is to use a LOCAL account on that machine, (if you know the username and password for a LOCAL account,) like so ![]() But what if that computer is on a remote site, and you need to get on it? Or it’s in the server room downstairs and you’re lazy like me! Now, if you want NLA that’s fine, make sure your RDP client has been updated, and you, and the target, are domain authenticated, and can see a domain controller. Well the clue is in the error massage, RDP is enabled but it requires NLA authentication. If you are an administrator on the remote computer, you can disable NLA by using the options on the remote tab of the System properties dialog box.Īlso See: Windows RDP: ‘An authentication error has occurred’ Solution The remote computer that you are trying to connect to requires network level authentication (NLA), but your windows domain controller cannot be contacted to perform NLA. Seen when attempting to connect to a remote machine via Remote Desktop
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