We seem to have an issue that has developed where using Internet Explorer we are now unable to set a mailbox forwarder within the ECP.
When we use Internet Explorer 11 the following is used to discover the issue:
1. Under mailboxes select any recipient, click "mailbox features" > and under Mail Flow click "View details"
2. Click "Enable forwarding" > "Browse" and then select and recipient you want to forward ail too.
3. Once you click on "Ok" it will be observed that the field in IE is blank account to forward to is not there.
We have tried rebooting the CAS already in case something was cached but this did not help resolve the issue.
We have noticed that if you open the ECP and repeat the steps in Firefox or Chrome the issue is not there. This is happening on all our machines in the domain and says to me it is an IE issue rather than Exchange maybe.. Does anyone know what might be causing it?
Our environment is Windows Server 2012 R2, Exchange 2013 CU6
