Adding the following to buffer overflow exclusions (in D+ settings ~ Image execution control).
all the executables in the ACAD directory
Program Files\Common Files\Macrovision Shared\FLEXnet Publisher\FNPLicensingService.exe
If this fails, in addition, make them all installer/updaters in the computer security policy/D+ rules. Note that you should not use ACAD to execute unknown files after doing this.
I’ll move this to help so you can be assisted with this. If these fixes fail please ask a mod for this to be moved back to bugs.