The Internet site you are about to view uses a certificate that has expired or is not yet valid. Do you wish to proceed ?

Solution
================
1.Open your ‘Internet Information Services (IIS) Manager’, select your machine name and double click on ‘Server Certificate’.

2.On the ‘Server Certificates’, select ‘Create Domain Certificate..’ on the Actions panel.

3.On the ‘Online Certification Authority’ click on ‘Select’ and select your local certificate server as well provide ‘Friendly Name’ and click on ‘Finish’.

4.A new certificate is created and assigned to the server, you can verify by opening server certificate.

AD RMS - Unable to connect using cluster name (AD RMS console) - The request failed with HTTP status 401: Unauthorized.

Enable the following registry settings on the RMS server and reboot.

• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\LanmanServer\Parameters
  Name:  DisableStrictNameChecking
  Type:  DWORD
  Value: 1
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa
  Name:  DisableLoopbackCheck
  Type:  DWORD
  Value: 1

HTTP 503 Error opening AD RMS console

Cause

The cause was the password in the IIS App pool had become corrupted. 

Resolution

To resolve the issue the password was updated in IIS by going into IIS / Advanced Settings / Identity / & Re-type password. 

Server Licensor Certificate Duration for Windows RMS Extended to 7150 Days

With this change, Microsoft also renewed intermediate certificates in the certificate chain so they don’t expire in the short term, which allows Windows Rights Management Services clusters to continue to operate until the end of the product’s supportability lifecycle.

For more information about the supportability lifecycle of Windows Server 2003, please see Microsoft Support Lifecycle.