Exchange Error: Exception has been thrown by the target of an invocation

Microsoft Exchange error “Exception has been thrown by the target of an invocation” indicates issues for background process to modify the settings of existing mailbox object.4- 3- 2014 20-31-20In my case, I could not enable an email address policy for a user mailbox. It was caused by wrong declaration of %rxy and replacing subsequent characters in the policy (missing r character).

Exchange 2013 – Email Address Policies

KB822447 – How to Modify an SMTP E-Mail Address by Using Recipient Policies