Microsoft Daylight Saving Time & Time Zone Blog
This is the blog maintained by staff at Microsoft to provide general information, announcements and provide answers to Frequently Asked Questions (FAQs) related to daylight saving time (DST) and time zone (TZ) changes around the world.* Important Notice
I installed the Windows OS patch KB 931836 on our Windows 2003/Exchange 2003 server on February 14. The workstations are not patched and the Outlook or Exchange update tool has not been run. What rules were the workstations using when they created calendar
Q: I installed the Windows OS patch KB 931836 on our Windows 2003/Exchange 2003 server on February...
Author: atsim1 Date: 03/07/2007
Is there any issues running the tools on Win2003 64bit?
Q: Is there any issues running the tools on Win2003 64bit?A: Remember that the tool will not run on...
Author: atsim1 Date: 03/07/2007
What is the best method to rebase multiple users from a single location without having to log in as each user?
Q: What is the best method to rebase multiple users from a single location without having to log in...
Author: atsim1 Date: 03/07/2007
What types of calendar items have Time Zone information? Appointments? Meeting Requests? Reoccurring Appointments? Reoccurring Meeting Requests?
Q: What types of calendar items have Time Zone information? Appointments? Meeting Requests?...
Author: atsim1 Date: 03/07/2007
Is it correct to state that OWA uses the same scheduling technique for single appointments that outlook does – that it relies on the user's clock, local time setting – and DST adjustment setting to calculate the UTC time for the meeting?
Q: Is it correct to state that OWA uses the same scheduling technique for single appointments that...
Author: atsim1 Date: 03/07/2007
We have many users with no TZ info. Is there a way to determine who does not use the calendar (i.e it's empty)?
Q: We have many users with no TZ info. Is there a way to determine who does not use the calendar...
Author: atsim1 Date: 03/07/2007
Do you have to run the rebasing tool on mailboxes in time zones that do not use daylight saving time?
Q: Do you have to run the rebasing tool on mailboxes in time zones that do not use daylight saving...
Author: atsim1 Date: 03/07/2007
IS there a place where I can get a list of all of the time zones for Outlook, also if the users gets the wrong time zone will they be able to re-adjust it by login through OWA
Q: IS there a place where I can get a list of all of the time zones for Outlook, also if the users...
Author: atsim1 Date: 03/07/2007
I am correct that the Outlook Tool will rebase all items in a public folder calendars, even if the account you are running it as is not the owner of the appointment?
Q: I am correct that the Outlook Tool will rebase all items in a public folder calendars, even if...
Author: atsim1 Date: 03/07/2007
How do I script tzmove to update more than one public folder calendar at a time?
Q: How do I script tzmove to update more than one public folder calendar at a time?A: you may...
Author: atsim1 Date: 03/07/2007
Can the outlook update tool be run on a non-admin account?
Q: Can the outlook update tool be run on a non-admin account? I have tried with no success. I used...
Author: atsim1 Date: 03/07/2007
We have an issue identifying which of our MB's are resource accounts that use auto-accept. If we run tzmove with FORCEREBASESUPPRESSALLUPDATES against all of our exchange servers, would that be a viable work around?
Q: We have an issue identifying which of our MB's are resource accounts that use auto-accept. If we...
Author: atsim1 Date: 03/07/2007
I'm using Exchange 2000 if we apply the Exchange 2000 hotfix for DST 2007 do I still need to run the Outlook update tool (tzmove) for our Outlook 2002/2003 users?
Q: I'm using Exchange 2000 if we apply the Exchange 2000 hotfix for DST 2007 do I still need to run...
Author: atsim1 Date: 03/07/2007
As I have users with 10 or more profiles, how do you run the TZMOVE Tool in interactive mode so that all the profiles are affected?
Q: As I have users with 10 or more profiles, how do you run the TZMOVE Tool in interactive mode so...
Author: atsim1 Date: 03/07/2007
I have users that have 10 or more profiles under outlook. Do you have to apply the TZMOVE tool for each profile or will running it once suffice for all the profiles?
Q: I have users that have 10 or more profiles under outlook. Do you have to apply the TZMOVE tool...
Author: atsim1 Date: 03/07/2007
The ‘Suppress All’ option bases its logic on the time zone information of the resource account: (article 933146) What is meant by the resource account?
Q: The ‘Suppress All’ option bases its logic on the time zone information of the resource account:...
Author: atsim1 Date: 03/07/2007
What is the downside if we use suppress all against ALL mailboxes including resources?
Q: A question on rebasing - from support.microsoft.com/kb/933146 scenario 2 - (suppress all)...
Author: atsim1 Date: 03/07/2007
I updated my OS and then use the Outlook tool on my mailbox, and then someone with a non-updated machine sends me a recurring appointment. Will the time be off by an hour?
Q: I updated my OS and then use the Outlook tool on my mailbox, and then someone with a non-updated...
Author: atsim1 Date: 03/07/2007
I just saw reference to a new hotfix for Outlook that I had not seen discussed before nor did I think was needed beyond the XP fix – support.microsoft.com/kb/932962 – I'm confused.
Q: I just saw reference to a new hotfix for Outlook that I had not seen discussed before nor did I...
Author: atsim1 Date: 03/07/2007
Why is the link on support.microsoft.com/?id=933146 under Prerequisites point to TZMove.exe version 1 and not Version 2? I thought we didn't have to install version 1 before version 2?
Q: Why is the link on support.microsoft.com/?id=933146 under Prerequisites point to...
Author: atsim1 Date: 03/07/2007
Why is the link on support.microsoft.com/?id=933146 under Prerequisites point to TZMove.exe version 1 and not Version 2?
Q: Why is the link on support.microsoft.com/?id=933146 under Prerequisites point to...
Author: atsim1 Date: 03/07/2007
What is the name of the rebase tool?
Q: What is the name of the rebase tool?A: The Time Zone Data Update Tool. It is available at...
Author: atsim1 Date: 03/07/2007
When running the tzmove command against public folders, how will I know it runs correctly?
Q: When running the tzmove command against public folders, how will I know it runs correctly? I am...
Author: atsim1 Date: 03/07/2007
When updating Public Folders centrally using "tzmove -quiet [path]" does it matter that my "Original Time Zone" as specified in TZmove is potentially different from the meeting organizers?
Q: When updating Public Folders centrally using "tzmove -quiet [path]" does it matter that my...
Author: atsim1 Date: 03/07/2007
Running TZMove gives me the error: 'Events' is not recognized as an internal or external command, operable program or batch file.
Q: While running the following: tzmove -quiet \Public Folders\All Public Folders\Calendar\Corporate...
Author: atsim1 Date: 03/07/2007
The Outlook tool displays the error “The Time Zone Data Update tool for Microsoft Office Outlook encountered the error: The server is not available. Contact your administrator if this condition persists.” Additional error information: 80040111
Q: The Outlook tool displays the error “The Time Zone Data Update tool for Microsoft Office Outlook...
Author: atsim1 Date: 03/07/2007
What occurs if tzmove runs on a mailbox with affect time zone (ie. EST) multiple times?
Q: What occurs if tzmove runs on a mailbox with affect time zone (ie. EST) multiple times?A: Please...
Author: atsim1 Date: 03/07/2007
And what should we do about all-day events that cross over two days?
Q: And what should we do about all-day events that cross over two days?A: Please review...
Author: atsim1 Date: 03/07/2007
Everything that occurs after DST is listed as an hour later than it should be. Is this expected?
Q: I have Outlook 2002, and I have set for myself recurring appointments (not sent to anyone, just...
Author: atsim1 Date: 03/07/2007
Can we ignore the error 0x8004010F?
Q: Can we ignore the error 0x8004010F?A: The error may cause some mailboxes to not complete. This...
Author: atsim1 Date: 03/07/2007
You recommend not to apply the patches until you are ready to run Outlook and Exchange Calendar Update Tools? and not recommended not to put patches to Exchange until after I run the Time Zone Data Update Tool?
Q: Also, you recommend not to apply the patches until you are ready to run Outlook and Exchange...
Author: atsim1 Date: 03/07/2007
Should I a) update to relect changes to windows time zones or b) move appointments created in the original time zone?
Q: What is the best choice with the tzmove when you have to select either: a) update to reflect...
Author: atsim1 Date: 03/07/2007
I patched my exchange 2003 sp2 servers 2 weeks ago with OS and Exch. hotfixes, but didn’t run the exchange / outlook tool, what is my best option?
Q: I patched my exchange 2003 sp2 servers 2 weeks ago with OS and Exch. hotfixes, but didn’t run the...
Author: atsim1 Date: 03/07/2007
I'd like to verify on at least 1 or 2 windows 2000 server machines that the Microsoft recommended DST update rollout worked using GP and VB script.
Q: I'd like to verify on at least 1 or 2 windows 2000 server machines that the Microsoft recommended...
Author: atsim1 Date: 03/07/2007
To update my computer for DST, do I just adjust my clock in the control panel?
Q: To update my computer for DST, do I just adjust my clock in the control panel? A: No, not with...
Author: atsim1 Date: 03/07/2007
Is WSUS current with the DST updates?
Q: On my WSUS server I don't see 931836 for Server 2003, but I am able to find other Server 2003...
Author: atsim1 Date: 03/07/2007
Is there a fix for Windows 95 / Windows 98 / Windows ME?
Q: Is there a fix for Windows 95 / Windows 98 / Windows ME?A: These versions of Windows are no...
Author: atsim1 Date: 03/07/2007
Is the DST Update purchased through extended hotfix support needed for Windows 2000?
Q: Is the DST Update purchased through extended hotfix support needed for Windows 2000? Tech support...
Author: atsim1 Date: 03/07/2007
When testing the patch, the clock changes in March but not in November. What's up?
Q: Hi! I'm testing scripts from KB article 914387 for updating DST information on Windows 2000...
Author: atsim1 Date: 03/07/2007
When I run Windows Updates from my server, the updates appear to be there for the OS and Exchange?
Q: When I run Windows Updates from my server, the updates appear to be there for the OS and...
Author: atsim1 Date: 03/07/2007
Is there a patch for WSUS server that would automatically distribute without user intervention?
Q: Most of my users have Windows 2000 Pro (150). No users have Administrative rights. Is there a...
Author: atsim1 Date: 03/07/2007
One of my servers isn't taking the patch. Help!
Q: Hello, I applied the Windows OS updates at support.microsoft.com/kb/931836 successfully to...
Author: atsim1 Date: 03/07/2007
If we can't update beyond NT4, do we have an alternatives to fix this problem?
Q: I know the suggested method to prepare for DST on Windows NT 4.0 systems is to upgrade to a newer...
Author: atsim1 Date: 03/07/2007
What is the rebase tool?
Q: We installed the Windows OS DST 2007 updates, but we haven't run anything else. We weren't sure...
Author: atsim1 Date: 03/07/2007
Help desk guidelines on Daylight Saving Time for Microsoft Office Outlook Calendars
The Exchange team has posted a helpdesk-oriented document that provides recommendations and...
Author: atsim1 Date: 03/07/2007
Why is the Exchange System Manager Message Tracking display off by one hour?
Q: Why is the Exchange System Manager Message Tracking display off by one hour? A: An issue has been...
Author: atsim1 Date: 03/07/2007
How do I find if an Outlook calendar has been rebased by the tools?
Q: How is it determined if a calendar update should be made? A: Here are the steps on how to see if...
Author: atsim1 Date: 03/07/2007
With Exchange 2003 SP2, XP SP1 & SP2, if we use the Exchange DST update tool, do we have to do anything to the client pc's besides the XP hotfix?
Q: We have an MS Exchange 2003 SP2 Server (native) and we have windows XP SP1 & SP2 Clients, if...
Author: atsim1 Date: 03/07/2007
Does the Windows 2000 registry modification and VB script work for systems other than Windows 2000?
Q: Does the Windows 2000 registry modification and VB script work for systems other than Windows...
Author: atsim1 Date: 03/07/2007