How to change SSL ports on owa

Written by craig witt
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Microsoft Exchange Server provides back-end infrastructure for many of the communication elements accessed through Microsoft Outlook. It is capable of managing the email messages and folders, calendar items, contact information and task lists for thousands of users. In addition to Outlook, Exchange Server allows users to access their data through a Web interface called Outlook Web Access (OWA). By default, this service delivers information through a secure connection using port 443. If you need to use an alternate port, make a few quick changes through IIS Manager and the Exchange Management Console.

Skill level:
Moderately Easy


  1. 1

    Click the Windows "Start" button, select "Administrative Tools" and then click "Internet Information Services (IIS) Manager."

  2. 2

    Right-click the "Default Web Site" item on the left side of the window, select "Edit Bindings" and then click the "Add" button.

  3. 3

    Select "https" from the "Type" drop-down menu, enter your preferred port number in the "Port" field, select your SSL certificate name from the corresponding drop-down menu and click "OK."

  4. 4

    Click "Close" and then the "X" in the top, right corner of the IIS Manager window to close the application.

  5. 5

    Click the Windows "Start" button and select "All Programs," followed by "Microsoft Exchange Server 2007" and "Exchange Management Console."

  6. 6

    Double-click the "Server Configuration" item on the left side of the window and then single-click the adjacent "Client Access" item.

  7. 7

    Single-click the name of your Outlook Web Access server and then look toward the bottom of the window. Right-click "owa" and select "Properties."

  8. 8

    Add the new port number to the addresses listed in the "Internal URL" and "External URL" fields, directly after the domain name but before any subdirectories (e.g., ""). Click "OK" to confirm the changes.

  9. 9

    Click the "X" in the top, right corner of the Exchange Management Console window to close the application.

  10. 10

    Click the Windows "Start" button and select "Command Prompt."

  11. 11

    Type the following command, substituting both instances of "XXX" with the new port number:

    netsh advfirewall firewall add rule name="OWA SSL Port XXX" dir=in action=allow protocol=TCP localport=XXX

    Press the "Enter" key to execute the command. This opens the new port to incoming traffic.

  12. 12

    Type the following command:

    iisreset /restart /noforce

    Press the "Enter" key to execute the command. This causes Internet Information Services to restart. Once the service is running again, Outlook Web Access will be accessible using the new port number.

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