Hi All

Thanks for the suggestions on this - I have solved it, and thought I would share.

I finally had to run teh server upgrade for 9.3.A to 9.3B on an older machine (Server2008r2 - Win7 under the hood). Running it from the older platform actually updated all of the server-side files properly. I was then able to run the workstation updates on Win10 successfully.

The issue appears to be around Windows 10 blocking the Wise installer (and uninstaller). I disabled every possible vector I could find for the block, but it still would not let certain processes related to it run. No idea why, as they run fine under the older OS, and run fine for the workstation update. I'll leave that for Adagio to sort out...

Thanks for all your time and suggestions!