Forum Discussion
Room calendar working hours not showing properly in Outlook
neil grinnall We seem to get inconsistent regional settings when we create a resource mailbox as well.
I found I needed to configure the mailbox regional settings but also the mailbox's calendar settings too. You can use something similar to the following PowerShell to configure all room mailboxes at once:
# Add all available resource mailboxes into a variable
$rooms = Get-Mailbox -RecipientTypeDetails RoomMailbox
# Set mailbox Timezone, Language and Date & Time formats to UK
$rooms | ForEach-Object {Set-MailboxRegionalConfiguration $_.alias -TimeZone 'GMT Standard Time' -language 'en-GB' -DateFormat 'dd/MM/yyyy' -TimeFormat 'HH:mm'}
# Update the calendar's working hours start & end time and timezone to our UK corp standard
$rooms | ForEach-Object {Set-MailboxCalendarConfiguration $_.alias -WorkingHoursTimeZone 'GMT Standard Time' -WorkingHoursStartTime '08:00:00' -WorkingHoursEndTime '18:00:00'}
Thom McKiernanSo maybe this went without saying, but after entering these bits of data you now see the proper look in the Outlook calendar with operating hours white and off time as Grayed out? Were your regional settings empty before you ran the set commands? Mine currently have no data in them for timezone, language, dateformat, and timeformat.
I have been having this issue as well - tried all the suggestions of setting/resetting timezones, working hours and regional settings. The issue only seems to happen in Outlook. OWA shows the working hours correctly, which tells me that there's nothing wrong with the calendar settings, but more with the Outlook app not displaying them correctly.
