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I have a server that is host a MSSQL database and some other server related tasks.

The server communicaties with a large number of devices. The devices send data to the server.

The communication links are down between the devices on the intranet and to the outside world. However it seems I can ping and can be pinged from machines on the same switch.

This includes the DNS Servers.

When I run,

C:\ipconfig /registerdns

I get

RPC Server is Unavailable.

So, it seems that the server can not verify the DNS server. Both DNS server are up and running. No other machines are affected on the network.

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Are you making a statement or asking a question? –  joeqwerty Feb 25 '10 at 4:55
1  
You need to review the Event log and post/research errors. There are many many reasons the RPC server could be unavailable. Restarting the RPC service may help for the moment allowing time to find the root cause. –  Ed Fries Feb 25 '10 at 4:58
    
Is the server multihomed? –  joeqwerty Feb 25 '10 at 5:08

2 Answers 2

Check on the SQL Server that the DHCP Client Service is running as that is responsible for dynamic updates. See MS KB264539 - Dynamic DNS updates do not work if the DHCP client service stops.

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up vote 1 down vote accepted

Nothing was wrong with the server.

The networking crew blocked the server due to updates that were not preformed to fix Adobe vulnerabilities.

There was a lack of communication to (1) get the updates installed and (2) that the server was blocked.

So, I guess the lesson is communicate.

Sorry for the goose chase and thanks.

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