FactoryTalk View SE 9 - Tag Write Problem

Hope somebody can help me here, I've done loads of FactoryTalk SCADA systems with no problems - this one is my first on Windows 10.

I was having issues with a standard application we do so I narrowed it down to a little test application, one display and one PLC address. When I place two numeric entries on my display (one direct addressed to the PLC and one to the same address via a HMI tag) - the direct addressed input writes to the tag successfully but the one via the HMI tag database fails to write. Both read fine. I'm suspecting some odd DCOM permission or something to be the problem....any ideas ?

Never had this issue with Windows 7 systems.

Thanks in advance.

Sorted it....

I've sorted it...it was down to Windows 10 and DCOM permissions. The link below has a great guide (well done Software Toolbox): -

https://www.softwaretoolbox.com/dcom/html/dcom_for_windows_7-_10-_-_server_2008r2.html

Windows and DCOM. A killer of many.