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If you have users workaholic – they won’t complain.
This situation is caused by Microsoft Outlook 2007.
When it was released it included only calendar holidays till the end of 2012.
Now when you want to still use Outlook 2007 you have to download and distribute a new “Holiday file” to your users.
You can find such file in internet.
Remember that holidays are added to a users Calendar by Microsoft Outlook and not Exchange Server. When you crate mailbox and for the first time you will login using OWA then you will see that mailbox calendar is empty – no holidays. But after you open you mailbox using Microsoft Oultook, all holidays will be added to mailbox calendar by outlook and then you can see them in OWA.
To resolve problem with holidays in Microsoft Outlook 2007 you need to find file with holidays, then save it as Outlook.HOL and send users link to UNC share, or replace old Outlook.HOL file in Microsoft Oultook installation path like:
C:\Program Files\Microsoft Office\Office12\1033
Then users have to open Outlook, and go to Tools, Options, Calendar Options, Holidays. Select the country (or countries) that has the holidays you want on your calendar and import.
Below you can find link to Outlook update with holidays:
If you are using Microsoft Outlook 2010 or 2013 you don’t have to worry.
Below we present how long holidays are supplied in Outlook 2010 or 2013:
2020 for movable dates such as Easter and Mother’s Day;
2028 for fixed holidays such as New Years Eve and Valentine’s Day
2022 for movable dates such as Easter and Mother’s Day;
2031 for some fixed holidays such as New Years Eve and Valentine’s Day