Host Name Resolution Does Not Work After One Year When You Use a Hosts File (812175)
The information in this article applies to:
- Microsoft Windows 2000 Server SP3
- Microsoft Windows 2000 Server SP2
- Microsoft Windows 2000 Server SP1
- Microsoft Windows 2000 Server
- Microsoft Windows 2000 Advanced Server SP3
- Microsoft Windows 2000 Advanced Server SP2
- Microsoft Windows 2000 Advanced Server SP1
- Microsoft Windows 2000 Advanced Server
- Microsoft Windows 2000 Professional SP3
- Microsoft Windows 2000 Professional SP2
- Microsoft Windows 2000 Professional SP1
- Microsoft Windows 2000 Professional
SYMPTOMSWhen you use a Hosts file for host name resolution on a Windows 2000-based computer, you may find that after a period of approximately
one year, host names are no longer resolved to Internet Protocol (IP)
addresses.CAUSEThis problem may occur if you do not restart the computer
during a one-year time period. The Time-to-Live (TTL) values for entries in the
Hosts file are cached for one year. If you do not restart the computer at any
time in a one-year time interval, the TTL values expire, and the entries in the
Hosts file must be refreshed before you can use them for name
resolution.RESOLUTIONService Pack InformationTo resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack
Hotfix InformationA supported fix is now available
from Microsoft, but it is only intended to correct the problem that is
described in this article. Apply it only to computers that are experiencing
this specific problem. This fix may receive additional testing. Therefore, if
you are not severely affected by this problem, Microsoft recommends that you
wait for the next Windows 2000 service pack that contains this hotfix. To
resolve this problem immediately, contact Microsoft Product Support Services to
obtain the fix. For a complete list of Microsoft Product Support Services phone
numbers and information about support costs, visit the following Microsoft Web
site: NOTE: In special cases, charges that are ordinarily incurred for
support calls may be canceled if a Microsoft Support Professional determines
that a specific update will resolve your problem. The typical support costs
will apply to additional support questions and issues that do not qualify for
the specific update in question. The global version of
this fix has the file attributes (or later) that are listed in the following
table. The dates and times for these files are listed in coordinated universal
time (UTC). When you view the file information, it is converted to local time.
To find the difference between UTC and local time, use the Time
Zone tab in the Date and Time tool in Control Panel. Date Time Version Size File name
------------------------------------------------------
17-Jan-03 14:36 5.0.2195.6656 96,016 Dnsrslvr.dll WORKAROUNDTo work around this problem, restart the computer so that
the TTL values for the entries in the Hosts file do not expire.STATUSMicrosoft
has confirmed that this is a problem in the Microsoft products that are listed
at the beginning of this article.
This problem was first corrected in Microsoft Windows 2000 Service Pack 4.MORE INFORMATIONFor more information about the Hosts file, see the sample
Hosts file in the
SystemRoot\System32\Drivers\Etc
folder.
Modification Type: | Minor | Last Reviewed: | 10/10/2005 |
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Keywords: | kbHotfixServer kbQFE kbDirServices kbWin2kSP4fix kbWin2000preSP4Fix kbfix kbbug KB812175 |
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