So you’ve upgraded to Exchange 2007, installed SP3 and all seems to be working properly. Take a moment and relax….that is until your iPhone and Blackberry users call complaining they cannot send / receive mail, check their calendar, etc… Your first instinct is to blame the device or the provider as internal users (including yourself) can send / receive mail, check your calendars, etc…. After you have dismissed the issue, it dawns on you these devices rely on OWA….which you haven’t tried yet. You crack open IE, head to the OWA site and get the dreaded “This page cannot be displayed” error.

Now panic mode sets in….we knew it would. Here’s the solution….

Exchange 2007 OWA is bundled and coupled with the Client Access Role and if OWA has failed, there’s a good chance something has gone off course with this role. A check of running services will not reveal any problems…nor will the Exchange Management Console. Sorry…but you’ve got to get under the hood here.

The most expeditious method to resolve this issue is to uninstall and reinstall the Client Access Role on the Exchange 2007 server responsible for OWA.

Step 1 – RDP to the server and open a command prompt.
Step 2 – Navigate to the directory where you have installed Exchange 2007 (ie: E:\program files\microsoft\exchange server\bin).
Step 3 – Uninstall the Client Access Role by issuing the command “exsetup.exe /mode:uninstall /role:ca” then hit Enter.

You should see output like this – resulting in a successful completion:

E:\Program Files\Microsoft\Exchange Server\Bin>exsetup.exe /mode:uninstall /role
s:ca”

Welcome to Microsoft Exchange Server 2007 Unattended Setup
The following server roles will be removed
Client Access Role

Performing Microsoft Exchange Server Prerequisite Check

Client Access Role Checks ……………………. COMPLETED

Configuring Microsoft Exchange Server

Client Access server role ……………………. COMPLETED
Removing Exchange Files ……………………. COMPLETED

The Microsoft Exchange Server setup operation completed successfully.

Step 4 – Install the Client Access Role by issuing the command “exsetup.exe /mode:install /role:ca” then hit Enter.

You should see output like this – resulting in a successful completion:

E:\Program Files\Microsoft\Exchange Server\Bin>exsetup.exe /mode:install /roles:
ca”

Welcome to Microsoft Exchange Server 2007 Unattended Setup
The following server roles will be installed
Client Access Role

Performing Microsoft Exchange Server Prerequisite Check

Client Access Role Checks ……………………. COMPLETED

Configuring Microsoft Exchange Server

Copying Exchange files ……………………. COMPLETED
Client Access server role ……………………. COMPLETED

The Microsoft Exchange Server setup operation completed successfully.

Step 5 – Restart all services and verifiy functionality.

Oh yeah…. call back the now irate iPhone and Blackberry users and blame the carrier .