Work-around Explained
Problem: A Microsoft update for Windows versions 8.1 and earlier (KB3086255, released in September 2015) disables the secdrv.sys file that enabled copy protection like that used by CDROM-keyed versions of A:M (v14 and earlier). With the file disabled, the CDROM verification gets stuck and A:M is never run.
Microsoft felt the file had become a security flaw. The copy protection software that uses that file was not written by Hash, Inc. Hash only licensed the software and won't have access to the code to update it or fix the security flaw.
Solution: The best solution is to update to the current version of A:M that doesn't use the CDROM copy protection. Current versions of A:M are much faster, more stable and incorporate new features.
However, in rare cases, it may be necessary to revisit old projects in the version they were authored in. If you need to run one of those past versions of A:M in Windows 8.1 or earlier, it is possible to re-enable the secdrv.sys file and permit a CD ROM version of A:M to run in Windows 8.1 and earlier.
This Microsoft Bulletin explains DOS-Style commands that can typed in to enable and disable the secdrv.sys file as needed. I was not able to get them to work on my computer, possibly because of "path" confusion. The bulletin also explains a registry modification that performs the same enabling/disabling. That procedure does work on my PC.
Microsoft warns that enabling this file is unwise and Hash, Inc. is not recommending you do this.
I am not recommending it either.
To minimize your risk, enable it only before starting A:M and disable it when done with A:M and disconnect your PC from your internet/network for the duration of that session.
On my PC, a restart is required before the registry enabling takes effect and another restart for disabling to take effect.
What about Windows 10? There is no published solution from Microsoft for Windows 10. If anyone finds one, let us know.
Another version of the How-to-Geek article hints at using a virtual machine of an older Win under Windows 10. I have not tried this.
Run as Administrator? Another problem mentioned above was that the CD ROM versions of A:M would fail to start and give an error message that they must be run by an administrator even if the user was logged into their PC as an administrator.
Individual programs can be set to automatically run as if by an administrator. on the program's icon, choose Properties, select the Compatibility tab and under "Privilege Level" check "Run this program as an administrator".