HP MT 3300 in SBS 2008 Environment running Dynamics AX 2009

I’ve recently added a HP MT 3300 Desktop PC to a Small Business Server 2008 domain running Dynamics AX 2009. Out of the box I was facing two issues:

1) SBS 2008 reported an error it could not communicate with the new client machine.

2) Opening the AOT was freezing the Dynamics AX client and crashed after a while because of insufficient memory. Very strange issue that could not to be fixed with any rollup or hotfix for Dynamics AX 2009.

Solution 1)
Per default the machine is running Norton Internet Security. Go to Settings > Network Settings > Firewall > Access Control. Set the SBS Server machine to Full Trust.

Solution 2)
Thanks to Microsoft Support: HP Security Manager is causing this issue (not only on MT 3300). Go to C:\Program Files (x86)\Hewlett-Packard\HP ProtectTools Security Manager\Bin and find the DpFbView.dll file. Rename the file to DpFbView.old.