Applies to SMBR 7.2.* Exchange 2016 Office Outlook 2016 Issue When trying to open a single mailbox as target, the following pop up occurs: Error: Can't open target (Single Mailbox) to restore mailbox ...Applies to SMBR 7.2.* Exchange 2016 Office Outlook 2016 Issue When trying to open a single mailbox as target, the following pop up occurs: Error: Can't open target (Single Mailbox) to restore mailbox items. Failure Message: Single Mailbox Recovery has encountered a problem. E_INVALIDARG: Invalid arguments were passed into function.