Answer Posted / Anuradha Singh

When you promoted your Exchange 2003 server to a domain controller (DC), the Outlook Web Access (OMA) might have stopped working due to changes in the default website settings. To resolve this issue, follow these steps:

1. Open the Internet Information Services (IIS) Manager console on the DC.

2. Right-click the Default Web Site and select Properties.

3. Go to the Directory Security tab, click Edit Authentication and Access Control, uncheck the Integrated Windows Authentication checkbox, and then click OK.

4. Click the Edit button under SSL Settings, set SSL Required to OFF, and click OK.

5. Apply these changes to all IP addresses in the Default Web Site properties.

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