I'm hoping someone can point me in the right direction here. I'm in the process of preparing an Exchange 2013 environment to work in co-existence with our existing Exchange 2010. Eventually, 2010 will be decommissioned. For the most part, things have went pretty smooth, but now I am at a standstill. Here's the scenario:
I move a user mailbox from 2010 to 2013
Outlook needs to be restarted
When Outlook comes back, I get "The connection to Microsoft Exchange is unavailable..."
I've determined that this is due to the automatically configured RPC over HTTP settings.
I've determined what settings need to be in there in order for the mailbox to connect. (the default settings do not work for us)
This occurs on new profile creation as well during the "Log on to server" portion of the autodiscover configuration.
However, I cannot for the life of me seem to find where on the server side I can make changes to what gets automatically populated in the RPC over HTTP fields during profile configuration. I realize it can be changed client-side, but with this many machines, that's not feasible, and I'm reluctant to use GPO since we will be in co-existence for a fair amount of time. So ultimately, I am looking for a way to change the parameters that are automatically configured for the RPC over HTTP setting in Outlook at the point of autodiscover/profile configuration.
Thanks in advance!