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The DNS parameter MaxCacheTTL is not set

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Hi,

Recently did a fresh install of SBS 2011 standard and have a couple of issues that need resolving. 

One of the issues is that after a few days, I start losing access to a number of websites. Running Microsoft Baseline Configuration Utility Analyser, the following issue is noted that appears to match my problem:-

Issue: The DNS parameter MaxCacheTTL is not set.

Impact: When name resolution is provided by root hints, Windows Server  2008 DNS Servers and Windows Server 2008 R2 DNS Servers may fail to resolve queries for the names of some top-level domains. If this occurs, the problem will continue until you clear the DNS Server cache or restart the DNS Server service. You may experience the problem with domains such as .co, .uk, .cn, and .br. However, the problem is not limited to those domains.

Resolution: For more information, see "Windows Server 2008 DNS Servers may fail to resolve queries for some top-level domains" at http://go.microsoft.com/fwlink/?LinkId=152402.

The link provides a solution which involved editing the registry; and  it is this I need guidance on.

4.    On the Edit menu, click New, click DWORD (32-bit) Value, and then add the following value:
  • Value: MaxCacheTTL
  • Data Type: DWORD
  • Data value: 0x2A300 (172800 seconds in decimal, or 2 days)

I cannot see how the above is achieved in one step in the order suggested. Being wet behind the ears, I am not 100% sure how to create the new Reg file; do I first create a file and name it "MaxCacheTTL" then open the file and add the data value "0x2A300" If I am right, I cannot see why the second step is even mentioned; and, being a person that takes things literally, it creates doubt.

If I have it completely wrong, step by step guidance would be appreciated.

Thanks in advance

Peter


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