Daylight saving patches suddenly no longer working

[David Lines]

We have just started seeing a problem in New Zealand with Daylight saving and
outlook calendar appointments.

Last year we applied all server, and exchange patches to our clinets and all
workstation and sharepoint patches. After we applied the pacthes all
problems went away. During fall of this year (March April for New Zealand)
when daylight saving ended there were absolutely NO problems.

Suddenly this week appointments between organizations we patched are 1 hour
out. When our customer makes an appointment with us it arrives 1 hour late.
When we accept they see us as TWO hours out.

OWA to outlook, Outlook to OWA, and OWA and OWA is fine - no problems.
Just when is goes through two outlook (one is 2003 and one is 2007) clients
does the error occur.

 

[Ed Hall]

David, just for your info, we have noticed something similar with an exchange
2003 server and outlook 2003 clients.

The current thinking is that the 'hotfix' that was applied last year has
'dissapeared' and not been incorporated into a patch. We are investigating
down this path now.

Anybody else with similar issues?

 

[David Lines]

Found the problem - MS released ANOTHER patch for daylight saving released
25th Oct 2007. This one for exchange server. Hotfix by request only,
KB937653.

Funny thing is we have not needed this patch until this current daylight
saving change 29 Sept 2008.

Go figure!!

 

[Diane Poremsky [MVP]]

There have been several time zone updates throughout the year and each one
supersedes the previous one and contain the past updates - it's possible the
most recent one doesn't have the correct NZ definitions in it. That's where
I would look...

--
Diane Poremsky [MVP - Outlook]



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[Ed Hall]

Thanks David, this is the same hotfix we are putting back in tonight.
have you installed it yet? No issues?

 

[Brian Tillman [MVP - Outlook]]

Funny thing is we have not needed this patch until this current daylight
saving change 29 Sept 2008.

Where are you that DST ended on that date?

 

[Ed Hall]

New Zealand - in 2007 changed the start and end dates for daylight saving
time to make it slightly longer (we like our boating and beaches, needed
longer daylight!).

Daylight saving time started Sunday 28th September.

Ed.

 

[Ed Hall]

Just for the benefit of others, the reinstall of hotfix KB937653 seems to
have solved our problem, so the hotfixes scope is slightly larger than the
examples stated in the knowledgebase article.

Ed.

 

[Brian Tillman [MVP - Outlook]]

New Zealand - in 2007 changed the start and end dates for daylight saving
time to make it slightly longer (we like our boating and beaches, needed
longer daylight!).

The US did that, too, but made it from the second Sunday in March to first
Sunday in November.