Hello everyone,
We are upgrading our Enterprise installation from 11.2 to 11.4. It is a single-machine install and we are upgrading each component individually.
The portal upgrade completes without any problem. But when we run the server executable, it keeps getting stuck and up pops an error message saying that it cannot write to a file in the Config.Msi folder (see screenshot below).

Needless to say, we are doing this upgrade with full admin privileges on the server machine. We cannot see/find the Config.Msi folder and thus cannot change any read/write permissions for it. We have talked with Esri tech support, but they say that it is a Windows issue.
We are really stuck, having tried to run the upgrade three times in three days, only to get stuck at the same step every time.
I am hoping someone here has run into a similar issue and would have some suggestions for us.
Thanks in advance for your help!
Deb