Thursday, April 20, 2017

TimeZone /Regional Settings for Shared Mailboxes in Office 365

During the migration to Office 365, I was working with one of the user to correct the issue of time zone of shared mailboxes. I noticed the time was off by a few hours when accessing some shared mailboxes in Office 365 using Outlook Web App (OWA). It was set to Microsoft’s default—Pacific Standard Time.
If you access the shared mailboxes using the desktop version of Outlook (2010, 2013 or 2016), this typically won’t be a problem as the desktop version of Outlook will simply use your PC’s regional settings. However, for various reasons, the desktop version of Outlook may not be an option.
OWA Timezone Settings for User Mailboxes in Office 365
By default when we logs into the OWA for first time, it will give us option to set the regional settings by choosing the default language and time zone, also we can change from Settings -->Mail -->General and select the time zone.
OWA Timezone Settings for Shared Mailboxes in Office 365
In Shared mailboxes work a little differently. We are not log directly into a shared mailbox as there is no user associated with one. If we have the requisite permissions to access a shared mailbox, we could open it in OWA to set the regional settings for it. The process is a little more involved than if you were opening your own mailbox for the first time.
Configure Timezone Settings for Shared mailboxes in Office 365 using OWA
To manually configure region and timezone settings for a shared mailbox via OWA, simply log into OWA as yourself, click your avatar and select Open another mailbox. Enter the shared mailbox name and click Open. From here, go to Options and select Mail from the navigation pane on the right. Select General from the navigation pane on the left, and click Region and timezone. Make any applicable changes to your language, date format, time format and/or timezone settings, then click Save.
Using PowerShell
For all shared mailboxes
Get-Mailbox –RecipientTypeDetails SharedMailbox | Set-MailboxRegionalConfiguration –Language “en-US” –TimeZone “Central Standard Time” –DateFormat “M/d/yyyy” –TimeFormat “h:mm tt”
For a single shared or user mailbox
Get-Mailbox –Identity sharedmailbox@Domain.com | Set-MailboxRegionalConfiguration –Language “en-US” –TimeZone “Central Standard Time” –DateFormat “M/d/yyyy” –TimeFormat “h:mm tt”
For all mailboxes
Get-Mailbox | Set-MailboxRegionalConfiguration –Language “en-US” –TimeZone “Central Standard Time” –DateFormat “M/d/yyyy” –TimeFormat “h:mm tt”


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