Microsoft Outlook: McAfee “Exchange Scan” Error
When opening Microsoft Outlook you receive an error: The Add-In "Exchange Scan" (C:\Program Files\McAfee\Managed VirusScan\VScan\OtlkUI20100320121745.dll) cannot be loaded and has been disabled by Outlook. (The exact name of OtlkUInnnnnnnnnnnnnn.dll will vary.)
This occurs because McAfee SaaS Endpoint Protection has updated itself, installing a new Outlook add-in module, and removing the old one, but it was not able to remove the file from the list of Outlook add-ins.
This doesn't cause a problem except for the startup message.
- Go to Tools, Trust Center.
- Choose Add-ins in the left-hand pane.
- At the base of the dialog, choose Manage: Exchange Client Extensions and click Go.
A dialog appears showing the currently installed extensions, with several instances of Exchange Scan:
Typically the first entry is the obsolete entry. Untick it and click OK.
- If the error message does not go away, repeat the process, but untick another instance of Exchange Scan. Re-tick the others.