Let Excel create child processes

Turn off the Do not allow child processes option for your Excel by following the instructions below.

1. Click the Start button and type in "Windows Security":
   
2. Click App & browser control:
   
3. Find Exploit protection and click Exploit protection settings:
   
4. In Program Settings, click on excel.exe:
   
5. Click Edit:
   
6. Find the Do not allow child processes option and make sure to turn it Off. Do not forget to click the Apply button:
   

Related issues

Ultimate Suite cannot load one of its dlls
Unable to start the 'AblebitsMakediffs.exe' application

See also

Ultimate Suite troubleshooting
Prevent Windows AppLocker from blocking Ultimate Suite