Out of office error, exchange server

 

Issue :

Error during setting OOF message: "Your automatic reply settings cannot be displayed because the server is currently unavailable. Try again later."

Reason:

EWS was not enabled for all users.

Solution:

Run the command: Get-Mailbox -ResultSize unlimited | Set-CasMailbox -EwsEnabled $true -EwsAllowOutlook $true

Other things to try:

-Recreated EWS URLs -Enabled OOF >Set-MailboxAutoReplyConfiguration <identity> -AutoReplyState Enabled - Make sure EWS is enabled for organization and there is no policy or allow list Get-organizationconfig | fl *EWS*   if there is policy run the command Set-OrganizationConfig  -EwsApplicationAccessPolicy $null -EwsAllowList $null this will allow all apps to access EWS.

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