Error 1722 Windows Server 2008 R2
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my branch domain controllers, SINGAPOREDC is not replicating with its replication partner in our data center, CENTRALDC-02. I discovered windows server 2008 r2 sp2 the issue when I noticed an updated file in the netlogon folder was not updating everywhere. It seems to be just this one branch server. Other branch domain controllers that replicate with CENTRALDC-02 https://support.microsoft.com/en-us/kb/2102154 are fine. On SINGAPOREDC, the RpcSs.exe is listening on TCP port 135. It is open in the firewall, and querying the port returns that it is listening. It's also listening on ports 389, 3268, and 3269. Performing a dcdiag /test:replications on SINGAPOREDC shows errors 1256 (The remote system is not available) and 1722 (The RPC server is unavailable) replicating from the central DC to the branch DC. https://community.spiceworks.com/topic/653215-replication-problem-rpc-server-unavailable-error-1722 No errors running this on the central DC. Performing repadmin /replsummary also shows error 1722, with 4 fails out of 5 attempts. I have rebooted both of these DCs. The RPC service is running. It appears to have all of its DNS records in place. Forcing a replication via Sites & Services sometimes throws an error saying it can't communicate with the server. Performing dcdiag /test:dns /v /e on SINGAPOREDC gives many errors, as shown below. Note that while it fails communicating with some domain controllers, it passes for others. Got this error for several but not all domain controllers. TextLdap search capabality attribute search failed on server LONDONDC, return value = 81 Got error while checking if the DC is using FRS or DFSR. Error: Win32 Error 81 The VerifyReferences, FrsEvent and DfsrEvent tests might fail because of this error. --- Got this error for several but not all domain controllers. TextTesting server: London\LONDONDC Starting test: Connectivity * Active Directory LDAP Services Check Got error while checking LDAP and RPC connectivity. Please check your firewall settings. ......................... LONDONDC failed test Connectivity Got this for the domain controller with which it is supposed to replicate.
Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us http://serverfault.com/questions/207000/the-rpc-server-is-unavailable-when-replicating-domain-controllers Learn more about Stack Overflow the company Business Learn more about hiring developers or http://www.networksteve.com/forum/topic.php/RPC_service_unavailable_error_1722_running_repadmin_/replsum/?TopicId=51976&Posts=6 posting ads with us Server Fault Questions Tags Users Badges Unanswered Ask Question _ Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up windows server and rise to the top “The RPC Server is unavailable” when replicating domain controllers up vote 1 down vote favorite I have two domain controllers: DC1: Win2k3 R2 EGDC1: Win2k8 R2 When I try to replicate these two (via Manage Sites and Services and under NTDS Settings) by selecting Replicate Now, I get the error message The RPC Server is unavailable. It doesn't matter if I try this windows server 2008 while remoted into DC1 or DC2. According to this technet article, this is a problem with a machine being down. However, I can additionally have both domain controllers ping one another just fine so there is no DNS issue nor any connectivity issue. Both are on the same LAN and even on the same subnet, so no VPN/wifi/firewall/quirky issues like that should be a problem. Additionally, I verified that the RPC service is running on both boxes. What could the problem be and how would I fix it? dcdiag results: Directory Server Diagnosis Performing initial setup: Trying to find home server... Home Server = EGDC1 * Identified AD Forest. Ldap search capabality attribute search failed on server DC1, return value = 81 Got error while checking if the DC is using FRS or DFSR. Error: Win32 Error 81The VerifyReferences, FrsEvent and DfsrEvent tests might fail because of this error. Done gathering initial info. Doing initial required tests Testing server: INF\EGDC1 Starting test: Connectivity ......................... EGDC1 passed test Connectivity Doing primary tests Testing server: INF\EGDC1 Starting test: Advertising ......................... EGDC1 passed test Advertising Starting test: FrsEvent ......................... EGDC1 passed test FrsEvent Starting test: DFSREvent ......................... EGDC1 passed test DFSREvent Starting test: SysVolCheck ......................... EGDC1
errors then repadmin /replsum works fine. I have forest level 2008 R2 with Windows Server 2008 R2, Windows 2012 core and Windows 2012 R2 servers running as DCs in five different locations and different subnets. March 16th, 2015 9:44pm I would recommend that you start with that especially the IP setting recommendations: http://www.ahmedmalek.com/web/fr/articles.asp?artid=23 I also recommend that you dcdiag to check that your DCs are in healthy state. See also that:https://social.technet.microsoft.com/Forums/windowsserver/en-US/8b62cd08-65c1-49e7-9919-881f6ff5a105/the-rpc-server-is-unavailableerror-1722?forum=winserverDS You might want to temporary disable security software running on your DCs for te Free Windows Admin Tool Kit Click here and download it now March 17th, 2015 5:43am Hi, I would agree with Ahmed MALEK. RPC error 1722 / 0x6ba / RPC_S_SERVER_UNAVAILABLE is logged when a lower layer protocol reports a connectivity failure. The common case is that the abstract TCP CONNECT operation failed. In the context of AD replication, the RPC client on the destination DC was not able to successfully connect to the RPC server on the source DC. Troubleshooting AD Replication error 1722: The RPC server is unavailable https://support.microsoft.com/en-us/kb/2102154 Please try the suggestions, feel free to let us know if you need further assistance. Regards. March 17th, 2015 9:57pm Hello, in addition assure that firewalls between DCsare open according to https://technet.microsoft.com/en-us/library/dd772723(WS.10).aspx Free Windows Admin Tool Kit Click here and download it now March 18th, 2015 12:31pm Hi, I just want to confirm what is the current situation. Please feel free to let us know if you need further assistance. Regards. March 19th, 2015 9:46pm I folllowedhttp://www.ahmedmalek.com/web/fr/articles.asp?artid=23, but continue to get 1722 errors when I run repadmin /replsum. I've attached the results from my dcdiag are below, but nothing jumps out at me. Any ideas? Directory Server Diagnosis Performing initial setup: Trying to find home server... Home Server = TEMPUS * Identified AD Forest. Done gathering initial info. Doing initial required tests Testing server: Default-First-Site-Name\TEMPUS Starting test: Connectivity ......................... TEMPUS passed test Connectivity Doing primary tests Testing server: Default-First-Site-Name\TEMPUS Starting