Outlook 2010 Dual Time Zone bug (Fixed)

Last reviewed on September 28, 2011

Update: Fixed in Outlook 2010 SP1

This bug affects Outlook 2010 only and only under all of the following conditions:

  1. You use Outlook 2010's dual time zone feature
  2. One time zone uses DST, the other time zone does not use DST
  3. You swap time zones

When you use Outlook 2010’s dual time zone feature and one time zone uses DST and the other does not, when you swap zones the Use DST checkbox in Window’s Date and Time applet may be unchecked when the time zone that uses DST is active. Because Outlook 2010 doesn’t display the Use DST checkbox, you won’t know this unless you happen to notice the computer’s time is off an hour.

Until Microsoft fixes this, you’ll need to open the Date and Time applet in the Control Panel and enable Use DST after swapping time zones.

More Information

Time Zone Problems continue (Answers forum post where this bug was first identified)

Outlook 2010 Time Zone problems (Answers forum – follow up discussion)

Written by

Diane Poremsky
A Microsoft Outlook Most Valuable Professional (MVP) since 1999 and involved in IT support since 1985, Diane is the author of several books and video training CDs and online training classes for Microsoft Outlook. You can find her helping people online in Outlook Forums as well as in the Microsoft Answers and TechNet forums.