We moved a few of our internal machines to Win 10 shortly after it’s release date. Although it can be made to work, there are currently some issues requiring workarounds that my cause difficulties for some users. Our current recommendation is to wait on Windows 10 until an ACT Service patch becomes available. We hope this will be in the next few weeks.
If you do choose to proceed, please make sure you have a complete backup prior to your upgrade.
Here are a couple of resources which may be helpful for you.