This article applies to the following products:
- Messageware OWA Guard 2016
- Messageware OWA Guard 2013
SUMMARY
After applying the July 13, 2021 Microsoft SUs (Security Updates), users are unable to reach OWA after the login page when the recent activity page is enabled in Messageware OWA Guard. To restore service, please refer to the Solutions below.
July 13, 2021 Microsoft SUs:
- Security update for Exchange Server 2019 CU10 (KB5004780)
- Security update for Exchange Server 2019 CU9 (KB5004780)
- Security update for Exchange Server 2016 CU21 (KB5004779)
- Security update for Exchange Server 2016 CU20 (KB5004779)
- Security update for Exchange Server 2013 CU23 (KB5004778)
SYMPTOM
After applying an Exchange Server July 2021 Security update, when users try to logon to OWA using their credentials and captcha (if applicable), the process does not reach the recent activity page and will eventually time out just to be redirected back to the OWA logon page.
SOLUTION 1
OWA Guard:
- Open OWA Guard's Web Admin (https://<web administration URL> / og-admin)
- Navigate to Rules
- For each Rule
- Select the Options tab
- Select Hide Recent Activity Page
- Click Save to commit the changes
- Wait 5 minutes for the system configuration to be automatically updated and restore expected OWA login. There is no need to restart any services.
SOLUTION 2
A hotfix is available by contacting the Messageware Technical Support team which can assist you with the installation. You can reach the team at: support@messageware.com