Here are the Windows permissions:
If you are using Windows 10, 64-bit, it is at c:\program files (x86)\illiad\ by default. Any other previous version of Windows, it will be at c:\program files\illiad\ by default. In addition, if you have a shared Print drive, you need to add these permissions to the Shared Print drive directory. To access your directory correctly, you need to make sure your permissions are correct. Instructions on how to do this follow:
With Windows 10 x64, you need to add Permissions for each user's Windows log to the ILLiad folder's security settings under c:\program files (x86)\. With Windows 10 x86, you work with the c:\program files\ILLiad\ folder. Also, if you have a shared print drive, you need to add it to the folder where the print documents are.
1. Right-click the ILLiad folder and choose properties.
2. Click the Security tab, and in the top section, choose Edit so you can edit the Users group.
3 Select the Users group and click to select Allow Full control.
4. Once you click OK, you will be back to the main ILLiad permissions window.
5. Choose Ok to get out of the window.
If you still cannot get ILLiad to work after all of this, you should get your I.T. involved and restore Windows back to a previous setup that worked.