We are running AD Self service on a dedicated Windows 2008 R2, Exchange 2010 server.

ADSelf service is Product Version: 4.5 Build no: 4500

Random users are experiencing the follwing error when attempting to log into the portal with the correct username/passwords

"Permission Denied. Kindly contact your Administrator"

I looked through the list of fixes in version 4544 and fix 2 below seems to be addressing my issues.

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Version 4.5 Build 4544: (10/July/2012)

Fixed:

• Overwriting of virtual IP Configuration Issue.
  
• Rare occurrence of a 'Denied Access to Self Service Portal' for random user(s).
  
• Service Pack Updation issue.

The OU's are correct in the policy configuration, all users are within managed OU of ADSelfService.

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This post is more for verification and to identify if there are any other steps I can take before implementing the service pack. Could you please advise?