Why do you think it's related to Altiris. Have you tried to follow the steps in KB 941024?
To resolve this problem, use the Dell Addfilter tool to remove the driver before you continue with the upgrade. To do this, follow these steps:
1. Copy the Addfilter.exe file to a folder on the computer.
2. Click Start, click Run, type CMD, and then click OK.
3. Type the following command, and then press ENTER, where Path is the path of the Addfilter.exe file:
This will remove the filter driver from the registry.
4. Manually delete the Afamgt.sys file from the following folder:
- C:windows/System32/drivers
Contact Dell support for more information about how to obtain the Dell Addfilter tool. Also, for more information about the problem that is described in this article, visit the following Dell Web site:
http://www.delltechcenter.com/page/Migrating+Dell+PowerEdge+Servers+to+Microsoft+Windows+Server+2008
https://support.microsoft.com/en-us/help/941024/message-when-you-run-the-windows-server-2008-system-compatibility-report-on-a-windows-server-2003-based-computer-uninstall-the-following-programs-storage-manager-driver