I have been going back and forth with PMDG with an issue with ops center not working and we have come to a dead end I'll quote what they found the issue is after looking at my cab file:

"There is something on that original computer that has made some strange registry entries for Prepar3D and that typically only happens with the Estonia Migration tool.  Unfortunately cleaning it up is not an easy process since its core Windows registry files.  If Uninstalling and Reinstalling Prepar3D didn't correct the issue then the only other thing I can offer to clean that up is a reformat which obviously isn't something to take lightly.  Until those registry entries are corrected the issue is going to continue to occur."

Does anyone on here have any suggestions?

PMDG was very helpful despite not being able to find a fix I want to thank them and just hope that maybe somebody here has an idea.

 

 

i would say a clean install of the os. that is your best option.

I would first try CCleaner (it's free) and us it to clear out any unassigned Registry entries, that might get rid of those "strange registry entries". I use it all the time to keep my registry clean. Might be a long shot but its a free app so worth a try and it prompts you if you want to backup your current registry before it makes any changes.

Cheers

Martin 

Thanks I'll give it a try.