It is possible to have performance issues when you’re using the combination of Microsoft Dynamics CRM and McAfee VirusScan 8.x in your organization.

McAfee has a feature called ScriptScan that scans and analyzes each webpage opened on your computer via either Outlook or a web browser. Since we rely on JavaScript on some of our web forms; load time of the actual page might take some time because it’s being scanned by the ScriptScan upon opening.

The current and not preferred possible workaround for this particular problem was to entirely disable ScriptScan on the client workstations and unregister SCRIPTPROXY.DLL. Understandably, not everybody felt comfortable doing this.

The McAfee Knowledgebase article that describes the necessary steps in detail can be found here.

The good news? McAfee has been working on improving ScriptScan. The patch (register modification), which adds a a new feature to ‘whitelist’ URLs is published here. This enhancement is expected to be made available in VirusScan 8.5i or later. So far, the results and feedback have been positive.

I would encourage you to test the suggested solution if you’re dealing with the above described problem. Feel free to leave a comment with your results.

Source: Steven Vlaanderen Oldenzeel