Question

SBS Serveral services fail to start with 1722 'The RPC server is unavailable'

Asked by: glennpratt

Customer moved SBS box, reconfigured new IP settings (single network, just changed to a new network).

Now Exchange, Sharepoint and some other services fail to load with 1722 "The RPC server is unavailable" whenever the NIC is enabled (Intel Pro/1000 integrated into a Dell 600SC). Group Policy fails to process with "unable to determine user or computer name".

Oddly, setting the server and domain name to point to 127.0.0.1 in the hosts file or disabling the NIC solves the situation.

Rebooting with the modified hosts file, or the NIC disabled allows exchange to run and group policy to process, etc.

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Asked On: 2007-12-17 at 00:54:29ID23027391
Tags: server
,; 1722
,; sbs
,; service
Topics: Windows Networking
,; SBS Small Business Server
,; Active Directory
Participating Experts: 3
Points: 0
Comments: 27

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Answers

by: RobWillPosted on 2007-12-17 at 04:36:42ID: 20484283

How did they "reconfigured new IP settings "?
With SBS this MUST be done with the wizards, if not you will break services such as Sharepoint".
To change the server IP use the "Change Server IP" Wizard located in the Server Management Console" under Internet and E-mail, and then run the CEICW (Configure E-mail and Internet Connection Wizard), located on the same page and labeled "Connect to the Internet".

by: keith_alabasterPosted on 2007-12-17 at 04:40:15ID: 20484299

http://support.microsoft.com/kb/927695

Could be the RSS (Receive side scaling) issue that is hitting a number of users currently.

Keith

by: glennprattPosted on 2007-12-17 at 11:29:21ID: 20487142

I changed the IP address manually, then ran CEICW. Going back and trying to run the change IP address wizard fails on IIS.

I don't think skipping the wizard is the root of the issue here though. These RPC errors go down to Active Directory, and I know AD doesn't take any special wizard to handle IP address changes.

by: RobWillPosted on 2007-12-17 at 12:43:32ID: 20487642

by: glennprattPosted on 2007-12-18 at 07:29:26ID: 20492792

>>"I don't think skipping the wizard is the root of the issue here though."
Perhaps not, but I have had to rebuild SBS's from scratch before, after doing so. You end up trying to repair by manually changing Sharepoint configs, IIS, RRAS, Firewall, etc.

Fair enough. I formated the array, installed from disc, installed relevant SP's and restored from backup. Now IIS is running, the Change IP address wizard runs without error, and everything seems peachy except Exchange won't start and just like before I'm getting RPC errors.

C:\Program Files\Support Tools>netdiag /q
......................................
 
    Computer Name: SERVER
    DNS Host Name: SERVER.domain.local
    System info : Microsoft Windows Server 2003 (Build 3790)
    Processor : x86 Family 15 Model 2 Stepping 9, GenuineIntel
    List of installed hotfixes :
        KB909520
        KB911564
        KB921503
        KB925398_WMP64
        KB925876
        KB925902
        KB926122
        KB927891
        KB928090-IE7
        KB929123
        KB929969
        KB930178
        KB931768-IE7
        KB931784
        KB931836
        KB932168
        KB933360
        KB933729
        KB933854
        KB935839
        KB935840
        KB935966
        KB936021
        KB936357
        KB936594
        KB936782
        KB937143-IE7
        KB938127-IE7
        KB939653-IE7
        KB941202
        KB941568
        KB941569
        KB941672
        KB942615-IE7
        KB942763
        KB943460
        KB944653
        Q147222
 
 
 
Per interface results:
 
    Adapter : Server Local Area Connection
 
        Host Name. . . . . . . . . : SERVER
        IP Address . . . . . . . . : 192.168.54.5
        Subnet Mask. . . . . . . . : 255.255.255.0
        Default Gateway. . . . . . : 192.168.54.1
        Primary WINS Server. . . . : 192.168.54.5
        Dns Servers. . . . . . . . : 192.168.54.5
 
 
 
 
Global results:
    [WARNING] You don't have a single interface with the <00> 'WorkStation Servi
ce', <03> 'Messenger Service', <20> 'WINS' names defined.
 
 
DNS test . . . . . . . . . . . . . : Passed
    PASS - All the DNS entries for DC are registered on DNS server '192.168.54.5
'.
 
 
DC list test . . . . . . . . . . . : Failed
    [WARNING] Cannot call DsBind to SERVER.domain.local (192.168.54.5). [
RPC_S_SERVER_UNAVAILABLE]
 
LDAP test. . . . . . . . . . . . . : Passed
    [WARNING] Failed to query SPN registration on DC 'SERVER.domain.local
'.
 
IP Security test . . . . . . . . . : Skipped
 
C:\Program Files\Support Tools>dcdiag
 
Domain Controller Diagnosis
 
Performing initial setup:
   [SERVER] Directory Binding Error 1722:
   The RPC server is unavailable.
   This may limit some of the tests that can be performed.
   Done gathering initial info.
 
Doing initial required tests
 
   Testing server: Default-First-Site-Name\SERVER
      Starting test: Connectivity
         [SERVER] DsBindWithSpnEx() failed with error 1722,
         The RPC server is unavailable..
         ......................... SERVER failed test Connectivity
 
Doing primary tests
 
   Testing server: Default-First-Site-Name\SERVER
      Skipping all tests, because server SERVER is
      not responding to directory service requests
 
   Running partition tests on : ForestDnsZones
      Starting test: CrossRefValidation
         ......................... ForestDnsZones passed test CrossRefValidation
 
      Starting test: CheckSDRefDom
         ......................... ForestDnsZones passed test CheckSDRefDom
 
   Running partition tests on : DomainDnsZones
      Starting test: CrossRefValidation
         ......................... DomainDnsZones passed test CrossRefValidation
 
      Starting test: CheckSDRefDom
         ......................... DomainDnsZones passed test CheckSDRefDom
 
   Running partition tests on : Schema
      Starting test: CrossRefValidation
         ......................... Schema passed test CrossRefValidation
      Starting test: CheckSDRefDom
         ......................... Schema passed test CheckSDRefDom
 
   Running partition tests on : Configuration
      Starting test: CrossRefValidation
         ......................... Configuration passed test CrossRefValidation
      Starting test: CheckSDRefDom
         ......................... Configuration passed test CheckSDRefDom
 
   Running partition tests on : domain
      Starting test: CrossRefValidation
         ......................... domain passed test CrossRefValidation
      Starting test: CheckSDRefDom
         ......................... domain passed test CheckSDRefDom
 
   Running enterprise tests on : domain.local
      Starting test: Intersite
         ......................... domain.local passed test Intersite
      Starting test: FsmoCheck
         ......................... domain.local passed test FsmoCheck
 
The command completed successfully

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by: glennprattPosted on 2007-12-18 at 08:26:31ID: 20493307

Thanks Keith for the link; unfortunately that workaround is already in the registry in every SBS I have seen lately and I'm not using NAT anyway.

by: keith_alabasterPosted on 2007-12-18 at 10:24:08ID: 20494182

OK - wasn't sure if you had ISA installed or rras configured.

Presumably there are no rogue entries remaining in the dns, AD or wins databases? No local hosts files etc that were restored from the old system? CEICW configures the systems well but doesn't take out exisiting records that may be conflicting anywhere.

Anthing from dcdiag etc?

by: glennprattPosted on 2007-12-18 at 10:38:56ID: 20494284

None that I can find. Almost everything works great locally (nothing remote works) if I add the FQDN as 127.0.0.1 in hosts. Remove that and all the error messages work there way back to one thing.

RPC_S_SERVER_UNAVAILABLE

by: glennprattPosted on 2007-12-18 at 10:40:47ID: 20494291

Well nothing RPC works remote (Outlook, Remote Management). File Sharing, Remote Desktop, IIS, OWA all work fine.

by: keith_alabasterPosted on 2007-12-18 at 10:49:51ID: 20494339

Can you post the output of a dcdiag (think /c as the parameter is the one we want)
After the reboot, are there any services at automatic that have failed to start?
How many nics in the box?
Can you post an ipconfig /all?

by: glennprattPosted on 2007-12-18 at 11:19:58ID: 20494570

ExchangeSA fails unless I add FQDN => 127.0.0.1 to the hosts file.

Just one NIC. I just tried disabling the internal Intel gigabit for some off brand NIC I had laying around with no change.

dcdiag /c

C:\Documents and Settings\Administrator>dcdiag /c
 
Domain Controller Diagnosis
 
Performing initial setup:
   [SVGREER] Directory Binding Error 1722:
   The RPC server is unavailable.
   This may limit some of the tests that can be performed.
   Done gathering initial info.
 
Doing initial required tests
 
   Testing server: Default-First-Site-Name\SVGREER
      Starting test: Connectivity
         [SVGREER] DsBindWithSpnEx() failed with error 1722,
         The RPC server is unavailable..
         ......................... SVGREER failed test Connectivity
 
Doing primary tests
 
   Testing server: Default-First-Site-Name\SVGREER
      Skipping all tests, because server SVGREER is
      not responding to directory service requests
 
DNS Tests are running and not hung. Please wait a few minutes...
 
   Running partition tests on : ForestDnsZones
      Starting test: CrossRefValidation
         ......................... ForestDnsZones passed test CrossRefValidation
 
      Starting test: CheckSDRefDom
         ......................... ForestDnsZones passed test CheckSDRefDom
 
   Running partition tests on : DomainDnsZones
      Starting test: CrossRefValidation
         ......................... DomainDnsZones passed test CrossRefValidation
 
      Starting test: CheckSDRefDom
         ......................... DomainDnsZones passed test CheckSDRefDom
 
   Running partition tests on : Schema
      Starting test: CrossRefValidation
         ......................... Schema passed test CrossRefValidation
      Starting test: CheckSDRefDom
         ......................... Schema passed test CheckSDRefDom
 
   Running partition tests on : Configuration
      Starting test: CrossRefValidation
         ......................... Configuration passed test CrossRefValidation
      Starting test: CheckSDRefDom
         ......................... Configuration passed test CheckSDRefDom
 
   Running partition tests on : greercapital
      Starting test: CrossRefValidation
         ......................... greercapital passed test CrossRefValidation
      Starting test: CheckSDRefDom
         ......................... greercapital passed test CheckSDRefDom
 
   Running enterprise tests on : greercapital.local
      Starting test: Intersite
         ......................... greercapital.local passed test Intersite
      Starting test: FsmoCheck
         ......................... greercapital.local passed test FsmoCheck
      Starting test: DNS
         Test results for domain controllers:
 
            DC: SVGREER.greercapital.local
            Domain: greercapital.local
 
 
               TEST: Basic (Basc)
                  Error: No DS RPC connectivity
 
         Summary of DNS test results:
 
                                            Auth Basc Forw Del  Dyn  RReg Ext
               ________________________________________________________________
            Domain: greercapital.local
               SVGREER                      PASS FAIL PASS PASS PASS PASS n/a
 
         ......................... greercapital.local failed test DNS
 
C:\Documents and Settings\Administrator>

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by: glennprattPosted on 2007-12-18 at 11:23:22ID: 20494610

Didn't sanitize that last post. How do you delete posts around here?

ipconfig /all

C:\Documents and Settings\Administrator>ipconfig /all
 
Windows IP Configuration
 
   Host Name . . . . . . . . . . . . : SERVER
   Primary Dns Suffix  . . . . . . . : domain.local
   Node Type . . . . . . . . . . . . : Unknown
   IP Routing Enabled. . . . . . . . : Yes
   WINS Proxy Enabled. . . . . . . . : Yes
   DNS Suffix Search List. . . . . . : domain.local
 
Ethernet adapter Local Area Connection:
 
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : ZyXEL GN600 series 1000Base-T Adapter
   Physical Address. . . . . . . . . : 00-13-49-17-40-FD
   DHCP Enabled. . . . . . . . . . . : No
   IP Address. . . . . . . . . . . . : 192.168.54.5
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.54.1
   DNS Servers . . . . . . . . . . . : 192.168.54.5
   Primary WINS Server . . . . . . . : 192.168.54.5
 
C:\Documents and Settings\Administrator>

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by: keith_alabasterPosted on 2007-12-18 at 12:24:12ID: 20495099

ipconfig looks fine. DCDIAG speaks for itself.
Do you want to run the additional tests listed here?
http://technet2.microsoft.com/windowsserver/en/library/5237db58-a1e8-40cd-ae8a-7f52848a90f21033.mspx?mfr=true

by: glennprattPosted on 2007-12-18 at 15:49:01ID: 20496618

I've run DCDIAG every which way, all the errors point to RPC Server unavailable.

RPC is not listening on the public interface. I've tried with two differnet network cards, reinstalled TCP/IP and restored from bare metal, but something in the system state is screwing up RPC. AFAIK, The server worked fine until I restored.

C:\Documents and Settings\Administrator>netstat -aon |find ":135"
  TCP    127.0.0.1:135          0.0.0.0:0              LISTENING       736
  UDP    127.0.0.1:135          *:*                                    736
  UDP    127.0.0.1:1351         *:*                                    1304

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by: glennprattPosted on 2007-12-18 at 15:55:03ID: 20496643

It would seam RPC is only listening on the loopback interface. On working machines it's listening on everything:

A much busier, working SBS:

C:\Documents and Settings\gpratt_admin>netstat -aon |find ":135"
  TCP    0.0.0.0:135            0.0.0.0:0              LISTENING       780
  TCP    10.0.0.2:135           10.0.0.2:23835         ESTABLISHED     780
  TCP    10.0.0.2:135           10.0.0.2:23927         ESTABLISHED     780
  TCP    10.0.0.2:135           10.0.0.2:24188         ESTABLISHED     780
  TCP    10.0.0.2:135           10.0.0.2:24189         ESTABLISHED     780
  TCP    10.0.0.2:23835         10.0.0.2:135           ESTABLISHED     448
  TCP    10.0.0.2:23927         10.0.0.2:135           ESTABLISHED     448
  TCP    10.0.0.2:24087         10.0.0.3:135           ESTABLISHED     448
  TCP    10.0.0.2:24162         10.0.0.2:135           TIME_WAIT       0
  TCP    10.0.0.2:24163         10.0.0.2:135           TIME_WAIT       0
  TCP    10.0.0.2:24187         10.0.0.2:135           TIME_WAIT       0
  TCP    10.0.0.2:24188         10.0.0.2:135           ESTABLISHED     4932
  TCP    10.0.0.2:24189         10.0.0.2:135           ESTABLISHED     4932
  UDP    0.0.0.0:135            *:*                                    780

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by: RobWillPosted on 2007-12-18 at 17:05:03ID: 20496895

It's been a long day so maybe I am missing the obvious, but if the server has 1 NIC with a subnet of 192.168.54.0/24 where did the 10.0.0.2 come from in your netstat output?

by: glennprattPosted on 2007-12-19 at 06:31:16ID: 20499746

That's from a working server on that subnet. Note the difference in the first entry though

RPC not working:

TCP 127.0.0.1:135 0.0.0.0:0 LISTENING 736

RPC working:

TCP 0.0.0.0:135 0.0.0.0:0 LISTENING 780

by: RobWillPosted on 2007-12-19 at 06:44:22ID: 20499816

Is there an actual loopback adapter installed in "Network Connections"? Not referring to the 127.0.0.1 address but an actual "device". This would not normally be used, but can be added. If present it may be taking priority.

Also check the binding order in Network connections, on the menu bar under advanced | Advanced settings | adapters and bindings.

Just grasping at straws <G>.

by: glennprattPosted on 2007-12-19 at 08:48:23ID: 20500853

No loopback adapter and the physical NIC is bound first.
Microsoft Support fixed the issue, it took two layers of techs and about 3 hours, but the end result was this.

Apparently the RPC key in the registry was modified to change the adapter RPC binds to, but I'm not sure how or why and neither does Microsoft so far.I have no idea how this key could have changed suddenly on a working server, or what exactly that entry did.

Deleting HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Rpc and rebooting fixed the issue.

The removed key is here.

Windows Registry Editor Version 5.00
 
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Rpc]
 
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Rpc\Linkage]
"Bind"=hex:49,50,76,34,01,00,00,00,03,00,00,00,7f,00,00,00,c0,a8,0a,00,c0,a8,\
  0a,13

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by: RobWillPosted on 2007-12-19 at 09:40:48ID: 20501288

Very odd. Wonder if a NIC driver update could have made some changes. Good call to get in touch with MS, doubt we would have isolated that here.

Thanks you for posting your findings glennpratt. Always good to know, and may help someone else in the future.
Glad to hear your problem is resolved.
Cheers !
--Rob

by: glennprattPosted on 2007-12-19 at 09:54:41ID: 20501409

I tried three different NIC drivers and two different NICs(not to mention, the primary NIC is probably the most common NIC in servers today (Intel PRO/1000).

I'm going to talk with Microsoft again and hopefully they have some clue what happened.

by: RobWillPosted on 2007-12-19 at 10:07:02ID: 20501487

Would be interesting to know.

by: keith_alabasterPosted on 2007-12-19 at 10:27:35ID: 20501634

Well done :)

by: glennprattPosted on 2007-12-20 at 11:53:25ID: 20509393

Well I talked with microsoft and they seemed to think that either it was changed intentionally by running RPCCFG or it was a virus. I have no reason to believe either, the servers been scanned by every AV I can get my hands on.

Thanks for the help guys.

by: RobWillPosted on 2007-12-20 at 12:08:03ID: 20509510

Thanks for letting us know. As you say, unlikely either is the cause.
Cheers!

by: Computer101Posted on 2008-02-22 at 14:31:54ID: 20962152

PAQed with points refunded (500)

Computer101
Community Support Moderator

20120131-EE-VQP-002

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Question

SBS Serveral services fail to start with 1722 'The RPC server is unavailable'

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server

1722

sbs

service

Windows Networking

SBS Small Business Server

Active Directory

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