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time zone update, apply hotfixes, possible ad replica issues?

Posted on 2008-10-16
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Last Modified: 2012-05-05
Hello All,

The government of Brazil and Argentina has changed their Daylight saving times (DST).
Now Microsoft has provided a hotfix to solve this issue:
Brazil: http://support.microsoft.com/kb/957201/en-us
Argentina: http://msexchangeteam.com/archive/2007/12/28/447791.aspx

As we have around 90 domain controllers in more than 30 different countries Im not sure how this hotfix can affect the domain controller replication.
Must this hotfix be applied just on the domain controllers in Brazil?
How can we automatically apply this hotfix? (netlogon? hotfix.exe /quiet?)
What happened to the outlook appointments?

Thanks in advance
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Question by:it-support-at
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by:haldoxp
ID: 22729755
I did the change several times via TZEdit -> http://support.microsoft.com/kb/914387. I changed the settings on servers in Brazil and on servers that are time servers for the Brazil servers.

I think this patch will do exactly same change on the system, but didn't used it.
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Author Comment

by:it-support-at
ID: 22730408
nice, but the tool does not work on server 2003 and does not solve my calendar issues..

so you've just modified the brazil DC's and no others, without having problems on replication?
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haldoxp earned 500 total points
ID: 22731577
Just started TZedit on W2k3 SP2 machine and it is working.

But must correct my self, this must be done on all servers as the time zone settings are stored in registry.

From our experience
1. create new time zone with current settings
2. in "Adjust Date/Time" change time zone to the new time zone
3. edit the "original" time zone
4. change time settings to the original time zone

- or -

1. create new time zone with new settings
2. in "Adjust Date/Time" change time zone to the new time zone


What exactly are the calendar issues? Maybe this can help -> http://support.microsoft.com/kb/931667/
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Author Comment

by:it-support-at
ID: 22731827
Thanks, but I prefer to apply the hotfix via logonscript "WindowsXP-KB957201-x86-ENU.exe /quiet"
So my client problem is solved.

For the outlook calendar issue I'll use tzmove.exe KB931667

I just need to know if Im in need to apply WindowsServer2003-KB957201-x86-ENU.exe on all DCs or just on the affected in Brazil?
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Assisted Solution

by:haldoxp
haldoxp earned 500 total points
ID: 22731854
we did the change only on servers in Brazil (on servers that are using this timezone)
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Author Comment

by:it-support-at
ID: 22784258
i've used the DST-Changing Tool from Microsoft to solve this issue - http://support.microsoft.com/gp/cp_dst
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