An Authentication Error Has Occurred Remote Desktop Windows Xp
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97202 Map it Mailing Address PO Box 82065Portland, OR 97282 Phone 503-287-3332 .(JavaScript must be enabled to view this email address) Enable XP SP3 to
Windows Xp Network Level Authentication Remote Desktop
use Network Level Authentication June 10 2013 Network Level Authentication (NLA) remote desktop an authentication error has occurred the local security authority as you may or may not know is a new feature of Windows Server 2008 and Vista
Remote Desktop An Authentication Error Has Occurred The Requested Security Package Does Not Exist
workstations that adds some extra security as well as improves login performance by offloading some of the initial remote computer resources required at login. Earlier versions of remote desktop an authentication error has occurred the local security authority cannot be contacted Terminal Services authentication did not occur until the full desktop connection (including all the related processes) were started which chewed up server resources and opened the server up to denial of services attacks. With NLA enabled, the user is "pre-authenticated" before any desktop and related processes are created. It is recommended to have all Terminal Servers remote desktop an authentication error has occurred 0x507 (RDS) use NLA at all times. XP Service Pack 3 and Remote Desktop 6.0 support NLA but it is not turned on by default which means you may simply not connect or see the error "An authentication error has occurred (Code:0x507)". To fix this on XP SP3 systems use the “fix it” utility from MS: http://support.microsoft.com/kb/951608 Or manually make the edits yourself: Click Start, click Run, type regedit, and then press ENTER. In the navigation pane, locate and then click the following registry subkey: HKEYLOCALMACHINE\SYSTEM\CurrentControlSet\Control\Lsa In the details pane, right-click Security Packages, and then click Modify. In the Value data box, type tspkg. Leave any data that is specific to other SSPs, and then click OK. In the navigation pane, locate and then click the following registry subkey: HKEYLOCALMACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders In the details pane, right-click SecurityProviders , and then click Modify. In the Value data box, type credssp.dll. Leave any data that is specific to other SSPs, and then click OK. Exit Registry Editor. Restart the c
on changes that must be made to allow a Windows XP machine to establish an RDP connection to a
Remote Desktop Connection An Authentication Error Has Occurred
machine that requires Network Level Authentication. When you attempt to remote desktop connection an authentication error has occurred the encryption type establish a Remote Desktop connection from a machine running Windows XP to a machine running a
An Internal Error Has Occurred Remote Desktop Windows 7
newer version of Windows, you may receive an error similar to the following: Network Level Authentication (NLA) is a mechanism for securing Remote Desktop connections which http://www.procompgroup.com/library/entry/enable_xp_sp3_to_use_network_level_authentication/ was introduced in Windows Vista and Windows Server 2008. Client-side support for NLA in Windows XP was introduced with version 6.1 of the Remote Desktop Connection software, which was included in Windows XP Service Pack 3. A later update made the Remote Desktop Connection 7.0 client available to Windows XP also. Installing the http://www.dell.com/support/Article/us/en/04/SLN266028/EN latest version of the Remote Desktop Connection client on the Windows XP machine is an important first step, but this alone is not sufficient to resolve the issue. With the Remote Desktop Connection 7.0 client installed, you may receive a different error when trying to connect via RDP to a machine with NLA enabled: An authentication error has occurred. The specified target is unknown or unreachable. This is because NLA requires the Credential Security Support Provider (CredSSP) to be enabled. In Windows XP, it must be enabled in the registry using the following procedure: Open Registry Editor (regedit). Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa. Right-click Security Packages in the right pane and select Modify. Leave the existing list of security packages intact and add tspkg to the end of it. Click OK. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders. Right-click SecurityProviders in the right pane and select Modify. Leave the existing list of security providers intact and add credssp.dll to the end of
Desktop Error ‘An authentication error has occurred. The Local Security Authority cannot be contacted' Home » Microsoft » Windows - Remote Desktop Error ‘An authentication error has occurred. http://www.petenetlive.com/KB/Article/0000826 The Local Security Authority cannot be contacted' KB ID 0000826 Dtd 27/06/13 Problem I saw this while attempting to create a remote desktop connection to a Windows 2012 Server. (Though connecting to https://helpforsure.wordpress.com/2011/01/23/an-authentication-error-has-occurred-the-specified-target-is-unknown-or-unreachable-nla-error-xp-sp3-2/ Windows 8 will be the same). I'd only just set this server up, and knew I'd enabled RDP, and I was attempting to connect as the domain administrator, so at first remote desktop I was a little perplexed. Solution If you have direct/local access to the machine you are trying to connect to. 1. Press Windows Key+R > In the run box type sysdm.cpl {enter} > Remote. 2. Remove the tick from "Allow connections only form computers running Remote Desktop with Network Level Authentication (recommended)". 3. Try again. If you do not have direct/local access error has occurred to the machine you are trying to connect to. 1. On YOUR Machine > Windows Key+R > type regedit {Enter} > File > Connect Network Registry > Type in the details for the machine you are trying to connect to > OK. 2. Navigate to; {remote-machine-name} > HKEY_LOCAL_MACHINE > SYSTEM > CurrentControlSet > Control > Terminal Server > WinStations > RDP-Tcp Locate the UserAuthentication value and change it to 1 (one) > OK > Exit the registry editor. 3. Try again. Disable RDP Network Level Authentication via Group Policy If the destination server is in a remote data centre or remote location, and you cannot access the System Properties, you can turn this option off with group policy, and wait a couple of hours. 1. On a DC > Start > Group Policy Management > Either create a new group policy object and link it to the OU containing the problem machine, or edit and existing one. (Here on my test network I'm going to edit the default domain policy - WARNING this will disable this feature on all machines in a production environment! 2. Navigat
11:19 pm Tags: 953760, CredSSP, NLA, RDP, WebSSO, XP SP3 This is really annoying and it took me a little while to find the fix, so I am blogging about this in hopes that others waste less time! I have a 2008 R2 RD Session Host server farm. IT is set to accept only connections from NLA clients. Connecting from any Win7 machine works great. Then I tried to connect via a client running XP SP3, running RDC 6.1 (supports NLA) with CredSSP enabled. I got the following error: An authentication error has occurred. The specified target is unknown or unreachable. If I turn off requiring NLA on the farm servers, I can connect. Next, I added RDC 7.0 and tried again. I get the same error. I tried from more XP clients, with the same setup and I get some that get in and some that give the error. VERY CONFUSING. Turns out, there is a hotfix out there that fixes this: I added: http://support.microsoft.com/kb/953760, and rebooted. Now it works. What I find interesting is that the hotfix does not specifically lay out this exact error result.ARGH.If it had I would have found it SO much faster. Note: WebSSO will still not work unless you have RDC 7.0 on your XP client - RDC 7.0 is a requirement for WebSSO. Share this:EmailPrintRedditLike this:Like Loading... Related Comments (2) 2 Responses to "An authentication error has occurred. The specified target is unknown or unreachable. NLA Error, XPSP3" Alvaro Says: May 4, 2011 at 9:21 pm Thanks, this solved my issue. Reply Paul Says: September 22, 2011 at 12:13 am Thanks, solved mine to Reply Leave a Reply Cancel reply Enter your comment here... Fill in your details below or click an icon to log in: Email (required) (Address never made public) Name (required) Website You are commenting using your WordPress.com account. (LogOut/Change) You are commenting using your Twitter account. (LogOut/Change) You are commenting using your Facebook account. (LogOut/Change) You are comment