Calendar appointments are still an hour out after applying DST updates

We have a Cirix Thin Client network, all running of window server 2003 and one exchange 2003 server.
I have been having lots of calls about the appointments in outlook calendars being one hour out when they where added within the last month. The exchange DST update was applied and all new appointments entered appear at the correct time now, but most of the older apointments that were entered before the update have still got the wrong times.
I have also tried using the outlook TZD update tool to see if I could at least rectify one outlook calender, but to no avail.
Is there anything I can do to make the appointments change to the correct time ?
I've read so many Microsoft help and support pages on these updates tools, to the point that I am more confused than when I started.
afletch78Asked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Ehab SalemIT ManagerCommented:
SOmetimes DST does not apply till you open time control panel, remove DST, click ok, then tick it, and click ok.
Sometimes (very rare) you would need to restart the machine.
0
jar3817Commented:
From what I remember, all machines involved had to have a DST patch to prevent problems with new calendar items: exchange OS, exchange program, client OS, and in your case probably the terminal server.

I didn't have many calendars to fix, so I used the individual fix util called "tzmove.exe". You run it from the client (or a machine with the user's exchange profile setup in outlook) and it fixes all the timezone problems.

http://www.microsoft.com/downloads/details.aspx?familyid=%20E343A233-B9C8-4652-9DD8-AE0F1AF62568&displaylang=en
0
afletch78Author Commented:
I've tried both suggestions, and neither worked.

jar3817 - when I ran the 'tzmove.exe' it just came back with : "No appointments, meetings or reminders were found that need to be moved to a new time zone"  - but there are ! and I can still see the appointments that are a hour out. I've tried it using random user accounts and it still come back with the same message.
0
Ultimate Tool Kit for Technology Solution Provider

Broken down into practical pointers and step-by-step instructions, the IT Service Excellence Tool Kit delivers expert advice for technology solution providers. Get your free copy now.

jar3817Commented:
Are you running this tool from a dst patched workstation?
0
afletch78Author Commented:
I have installed the KB 951072 patch on the workstation. Is that the patch that you are on about ?  
0
afletch78Author Commented:
think I've found the problem, I found this in one of the many long winded microsoft documents about the exchange / outlook dst tools ,  I think this part should have been with the documentation with the dst update.

Rapid succession of steps is important: As mentioned earlier, it is better to run the Outlook or Exchange Time Zone Data Update tool as soon as possible after the time that the Windows operating system time zone updates are applied to all computers. If calendar items in the extended DST period are scheduled after the operating system updates are applied but before the tool is run, they will incorrectly be moved one hour earlier. To correct such calendar items, organizers should manually update such items to help make sure that they are scheduled accurately for themselves and all invitees.


0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
afletch78Author Commented:
answer found
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Email Servers

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.