Hi Tony,
another victim, here is what I can add:
- running Win10x64, Version 1511, OS Build 10586.589
- Intel Ethernet adapter I218-V with MS Driver Version 12.12.50.6 of 20.03.2015
- first did the upgrade installation - network no longer working. Before the installation, I shut down all VMs.
- not using the enhanced keyboard driver in 12.0 and did not select it for the 12.5 installation.
- uninstalled 12.5 and did a full reinstall of 12.5 without enhanced keyboard - network was working again, but only for a short time
- tried to troubleshoot the issue, following advice for similar issue in the past - no success
- since I am relying on my VMs for my work and it was very late, I uninstalled 12.5 and reinstalled 12.0 - network works again
I did not delete any of the log files, so if you think that they might contain something of value to solve this issue, please let me know what you want and what I should do.
Kind regards,
Ralf