Microsoft has announced that it will block games utilizing SafeDisc or Securom DRM on Windows 10, citing security concerns owing to a lack of support by the companies that made them.
In an interview with German publication Rocket Beans TV, Microsoft's Enthusiast Marketing Manager for Windows, Boris Schneider-Johne, revealed:
Everything that ran in Windows 7 should also run in Windows 10. There are just two silly exceptions: antivirus software and stuff that's deeply embedded into the system.
And then there are old games on CD-Rom that have DRM. This DRM stuff is also deeply embedded in your system, and that's where Windows 10 says 'sorry, we cannot allow that, because that would be a possible loophole for computer viruses.
That's why there are a couple of games from 2003-2008 with Securom, etc. that simply don't run without a no-CD patch or some such. We can just not support that if it's a possible danger for our users. There are a couple of patches from developers already, and there is stuff like GOG where you'll find versions of those games that work.
Microsoft, for its part, seems to be doing all it can to protect users from using older DRM, potentially leaving them open to a malicious attack. SafeDisc has mentioned that it will leave it up to Microsoft to issue a fix for the ROM to be compatible with Windows 10:
SafeDisc DRM hasn't been supported for a few years now, and the driver has consequently not been updated for some time. Microsoft should have migrated the existing software since Windows 8. We don't know if that's still possible with Windows 10 or if they simply didn't care about it.