WARNING: The OWAEnabled property of mailbox 'Mailbox' is not located in a
consistent state. Reset the OWAEnabled property using the "Set-CASMailbox" cmdlet.
WARNING: Unexpected error. A Watson image is generated: The value 'HTTP§1§1§§§§§§' is already in the collection
available.
The value 'HTTP§1§1§§§§§§' already exists in the collection.
+ CategoryInfo : NotSpecified: (:) [Set-CASMailbox], InvalidOperationException
+ FullyQualifiedErrorId : System.InvalidOperationException,Microsoft.Exchange.Management.RecipientTasks.SetCASMail
box
The reason for this error is a duplicate entry in the mailbox protocol settings:
[PS] C:\Windows\system32>get-mailbox Mailbox | fl *protocol*
ProtocolSettings : {OWA§1, HTTP§1§1§§§§§§, HTTP§0§1§§§§§§}
For comparison, a mailbox with correct entries:
[PS] C:\Windows\system32>get-mailbox mailbox| fl *protocol*
ProtocolSettings : {HTTP§0§1§§§§§§, OWA§0}
The value for ProtocolSettings can be changed via ADSI-Edit in the standard naming context, simply delete one of the duplicate entries there: