So I have recently been encountering the problem of Dxtory not starting up. I found out a way to fix it luckily! However, I don't know if this may work for others. This is also for Windows 10. I don't know if other kinds of windows would work!
1. Go to settings
2. Go to "Network and Internet"
3. Now click on "Windows Firewall"
4. Click on "Advanced Settings" which is highlighted in blue
5. Click on "Inbound Rules" located to the left
6. Find Dxtory. There should be four. If it is disabled, enable all. Including the ones with the profile as "Domain". That should work.
7. Close and open Dxtory. You may need to wait a few minutes before it opens up.
Hopefully I explained correctly on this. If I did anything wrong, please let me know! Thank you!