Quick and dirty sequence for updating DST

1. Apply updates to Microsoft Windows operating systems on Exchange Server computers.

2. Apply updates to Windows operating systems on individual workstations.

3. Apply the Exchange Server DST update.

4. The IT administrator can use one of the following four alternatives:

• Run the Exchange Calendar Update Tool against all affected users, servers, or both.
• Push out the Outlook Time Zone Data Update Tool to the clients and let the users update their own mailboxes.
• Run the Exchange Calendar Update Tool against all affected users, servers, or both. However, only modify recurring appointments. Then ask users to rebook single instance appointments that fall into the extended DST period, or ask them to run the Outlook Time Zone Data Update Tool.
• Run neither the Exchange Calendar Update Tool nor the Outlook Time Zone Data Update Tool. Ask users to examine their calendars and rebook as necessary.