In ADUC under the following: DC=TrustAnchors,CN=MicrosoftDNS,CN=System I see 3 objects (DNSNode)... I have 3 domain controllers all 3 are 2012 R2, 2 of the objects in the TrustAnchors OU is the DC's, the 3rd object is an @ symbol... It does not contain the 3rd domain controller.
How can I add the missing domain controller?
I have some C++ code that makes use of the DsEnumerateDomainTrusts() API function as part of gathering information about the AD forest environment that the code is executing in. This code has been functioning correctly for nearly 10 years when executed in a variety of environments. Recently, a run-time environment was encountered where the call to DsEnumerateDomainTrusts() failed with error 1722, which is RPC Server Unavailable. Further review of the run-time environment showed that the DCs in the forest root domain had the "Network security: Restrict NTLM: Incoming NTLM traffice" security option set to "Deny all accounts" via a GPO setting. Testing in a lab environment duplicated these conditions and caused the error to occur. Removing the restriction on incoming NTLM authentication causes the error to cease to occur, and DsEnumerateDomainTrusts() to work properly. The setting of restricting incoming NTLM authentication can be toggled on & off dynamically, and the [non-]occurrence of error 1722 tracks with it 100%.
This, of course, leads to a question... Why is this happening?
Is DsEnumerateDomainTrusts() locked in to using NTLM as it makes an RPC call to a DC?
Is DSEnumerateDomainTrusts() and its usage of RPC affected in any way by how COM Security is initialized via CoInitializeSecurty()?
[Edit] - Windows Firewall is disabled. There are no firewalls or other types of network security tools present that can block access to TCP ports. The one and only change that is being made is to disable or re-enable incoming NTLM authentication on the DCs in the forest root domain. In the case of my lab environment, it's a single domain forest with a single DC and a single member server, with my code executing on the member server. A bi-directional forest trust exists between this forest and another similarly configured forest. No attempt is being made communicate with any computers across the forest trust.
I have a lab configured with a single domain controller and one client server. Both servers are Windows Server 2008 R2 Standard and the functional level of the domain is Windows Server 2008 R2. After I promoted the domain controller, I did not make any changes to the default domain policy GPO. My problem is this: I created a Managed Service Account and a regular user account and tried to use both of these accounts as logon accounts for the "Disk Defragmenter" service on my client server and domain controller. Each time it failed with the following error:
In the system event log:
I also tried moving the client server into a custom OU and blocked inheritance of all parent GPOs, but this did not work either...same error.
I'm assuming the problem lies with the Default Domain group policy and Default Domain Controllers group policy, I'm just not sure which setting. I'm at a complete loss, so any help is greatly appreciated.
jason
Experts,
I ave created 3 machines on VMware( domain, node1 and node 2 )
one domain user is created on domain machine and added to domain admin group.
i am trying to adding the same domain user in node1 as a Admin but it is disappearing immediately
Please share your ideas.
Tanks in advance.
Hi,
Is it possible to create an user with only installation permission in AD?
For example: A domain user want to install certain application but the UAC prompt pop up and i want to be able to provide him/her an "installation" permission only login to install that application on their own.
What type of "Member Of" would that be under?
Thanks,
-Nick
Hi Sir / Madam,
I am vivek Dwivedi. i tried to several time "apply the desktop wallpaper group policy in windows 10" but i m not succeed. after join the under domain(windows server 2012 r2) all policy are working accepting desktop wallpaper policy is not working
on windows 10 client system. but this policy is working on windows 7 client system. plz sir reply sir / maam.
I have a server 2008 environment and I had to rename the domain. I followed the rename instructions in this video https://www.youtube.com/watch?v=RwXyi1_UDWo. Everything completed with no errors but I am have issues with DNS. The domain started out as domain.org and I changed it to domain.local. After going through all of the steps the server is listed as server.domain.org but it shows it as part of the domain.local domain, all of the workstations are the same way. When the workstations login and register with DNS they register in the domain.org zone. I have changed the primary name of the server to the new domain. I have changed DHCP to hand out the new domain suffix. I deleted the told domain DNS ZONE and then the computers do not register with anything at all in DNS. When I deleted the domain.org DNS zone workstations could not access file shares. I went through DNS and changed all references to domain.org to domain.local and they keep changing back for the SOA and name servers. I do I get domain.org to go away and everything to start showing under domain.local. This is a single server environment.
Any help is appreciated.
Hi,
So I am going absolutely crazy try to configure RODC that will authenticate the clients after credential caching has been done so that the authentication is done on the RODC.
This what I am doing, can some one please tell me what I'm doing wrong.
1.So I configure the clients to get an IP from the DC DHCP and join the clients to the DC. (TESTED AND WORKING)
2.Then I configure the RODC on the DC for Password Retention Policy and set up the RODC Server as a new Server VM. (TESTED AND WORKING)
3.Then I change the RODC primary DNS IP to itself (127.0.0.1) and the alternate DNS as the DC IP.
4.Then I point the clients to use the RODC as the primary DNS IP and the DC as the alternate DNS IP
5.Then I turn off the DC and test the clients to authenticate by the RODC, the clients login but then the network is unknown and not Domain Network. At this point I have checked that the clients IP is something other than what the DHCP has given them it is probably because of changing the primary DNS of clients to RODC IP.
As you can see below the W10, W8 and W7 computers and MAdmin, M1 and M2 clients are allowed in the Password Retention Policy yet the authentication happens only at the DC, am I missing some step.
Could some one kindly please let me know where I am doing wrong.
Thank You Very Much
Currently, I have two servers 2k12 running AD integrated dns. They're both replicating well with each other. some of my clients use a static IP address.
- Primary server: primary.contoso.net 192.168.100.1
- Secondary server: secondary.contoso.net 192.168.100.2
- Client: 192.168.100.33, preferred dns192.168.100.1/ Alternate dns 192.168.100.2
After primary was down, my client cannot nslookup till my client move Alternate dns(192.168.100.2) to Preferred dns.
Any solution on how it is automatic to let the clients know secondary dns server when the primary is down?
Any advise,
Thanks with Regards,
Sunsami MAO
Hi guys,
I've searched and searched but could not find an answer to this. I already have a relay state that was generated by my SAML Service Provider. I'm trying to figure out where to add that to my ADFS configuration so that when I go to my-site/adfs/ls/signon.aspx? and try to log in (by doing the IDP initiated flow), my Service Provider recognizes the relay state. All of my configurations on my Service Provider are right, and I have the Service Provider flow working, but I cannot get the IDP flow working.
I've tried adding the below URL to the 'relying party identifiers':
my-site/adfs/ls...signon.aspx?RelayState=MY_SERVICE_PROVIDER_GENERATED_RELAY_STATE
But that causes my service provider flow to stop working, and the IDP flow still does not work..
All of the articles I've seen talk about how to generate the url, but do not show where to put that url once you have it. Any ideas??
Hi
I have just recently deleted an AD object from the domain which houses the bitlocker key.
How do I restore\recover the object to as I need the bitlocker key desperately.
Regards
Tony
Thanks & Regards
Naresh T
1. active directory is not working
Hi,
I promoted a Windows 2012 R2 RODC via Powershell script. The server did not reboot after replication or advertise as Domain Controller although I can see EventID 29223 "This server is now a Domain Controller."
I did not find any usefully infomation on the logs in debug folder, and "Active Directory Domain Services was shut down successfully. " on EventID 1004
Any idea to resolve the issue?
Thanks
Hi,
have done some reading about this well-known attribute (lastlogontimestamp) and am aware of the difference to lastlogon and the excellent BLOG post at http://blogs.technet.com/b/askds/archive/2009/04/15/the-lastlogontimestamp-attribute-what-it-was-designed-for-and-how-it-works.aspx?wa=wsignin1.0
Nevertheless, I have some open question, I'd like to have a confirmation for:
- do failed logon attempts also update lastlogontimestamp (if needed), or is it a trace of successful logon?
- when I search (with repadmin) for the lastlogon attribute (not lastlogontimestamp) of a specific account on all DCs in a domain, how can it be that all values returned are older than lastlogontimestamp? At least one should be at least as recent as llts, right?
- is it possible that lastlogontimestamp gets updated by somebody else that the user account (i.e. through some administration activity, like enabling/disabling, resetting password etc.)?
Environment is W2K3 (forest/domain), SP2.
Thx
PiQu
Hi All,
Users added to Remote Desktop Users local group on Terminal Server get "No search results" when they use ADUC snapin find option to search any user account. However they can manually navigate to the user accounts from the OU structure using ADUC.
We tried giving List Contents rights in AD to the users who are member of the TS RDP group. However the ADUC find functionality still isn't working.
The ADUC snapin find function works properly for users who are members of the administrators local group on the TS box.
TS Box Operating system : Win2k12R2
Any thoughts?
Regards,
Cool1
This question was asked but never satisfactorily answered back in 2011:
FQDN vs NetBIOS domain name at logon screen
I am seeing the same behavior as the original poster: both FQDN and NetBIOS domain names appear on the logon screen at different times. In my case, I want to ALWAYS show the NetBIOS (short) name.
I believe the behavior may change if Remote Desktop is used: when logging in remotely, I ALWAYS see the FQDN, even if I specify the NetBIOS name at logon time.
Anyone have any thoughts on this?
Hello All,
we have a planned maintenance in our network were the domain controllers and DNS serves are configured.
For around 5 minutes the default Gateway ip will be down, in the network were the DC are hosted. This means the servers joined to the domain cannot reach the domain controllers. we have multiple subnets for the application servers.
we have samba shares configured with this domain /java applications using the domain controllers for the authentications.
Also there are lot of application servers connecting to Database/Sql servers.
Most of the sql servers are running with domain user ids.
we understand that any new authentication and connection to the domain will fail for this 5 minutes.
But do you see any impact on the Sql servers or any other applications, samba etc which is connected to this domain?
will the running applications/DB/Samba/Java go down?
Could you kindly advice and also suggest on the precautions and any other alternate ways to avoid any potential issues?
Thanks
krishna
I am trying to discover the source of malicious authentication attempts in our domain. We are seeing multiple 4776 events in the Security log of a specific domain controller. Random login names used at about 10 per minute. See event below.
I have been unable to determine the source computer as the event's Source Workstation field is blank. I installed Wireshark and can see this domain controller asking other sub domains about authenticating the false account name, but haven't been able to identify the infected source computer.
Question: What are the initial authentication packet types in Wireshark I should be looking for to determine the source? Also how can I receive more verbose information from the Security log which may reveal the originating computer? Any other logs I can investigate?
Please advise. Thanks.
Event 4776, Microsoft Windows security auditing
The computer attempted to validate the credentials for an account.
Authentication Package: MICROSOFT_AUTHENTICATION_PACKAGE_V1_0
Logon Account: stella
Source Workstation:
Error Code: 0xC0000064