Installing an Exchange Cumulative Update

Microsoft release updates, hotfixes and cumulative updates on a relatively regular basis. When installing Exchange Cumulative Updates (CU), the following steps should be followed to ensure that the update process completes successfully.

1. Uninstall Authlogics Exchange Agent
2. Test Outlook Web Access on that server ensuring that you can authenticate using a standard AD username and password credentials
3. Install the Exchange Cumulative Update
4. Upon completion of the CU, retest the OWA authentication using a valid AD username and password
5. Re-install Authlogics Exchange Agent
6. Retest OWA authentication

If you have not followed the steps detailed above and have already installed the latest Microsoft Cumulative Update, Authlogics Exchange Agent may not be working as expected. To rectify this, please perform the following operations:

1. Take a backup of the Web.Config file located in C:\Program Files\Microsoft\Exchange Server\V15\FrontEnd\HttpProxy\owa and place this file into a temporary folder.
2. Uninstall the Authlogics Exchange Agent
3. Copy the Config backup file from Step 1 back over the file located in the C:\Program Files\Microsoft\Exchange Server\V15\FrontEnd\HttpProxy\owa folder.
4. Test Outlook Web Access on that server ensuring that you can authenticate using a standard AD username and password credentials
5. Re-install Authlogics Exchange Agent
6. Retest OWA authentication