One of my PCs running Win10 Pro installed the Anniversary update the other day and now I have no Network access. Diagnosing the fault reports problems with the Realtek Network Adaptor driver which Windows is unable to fix. I have the latest driver installed and have tried every suggestion possible I could find online (see link below) but nothing has worked. I tried using a WiFi Adaptor which installed OK and connects to my Modem OK but still no access to my Network because of the Adaptor Driver problem. My other PC uses Windows 10 Home, has the same Network Adaptor onboard and the Anniversary Update has caused no problems at all so I'm guessing the problem lies with Win 10 Pro and I'll probably have to wait for Realtek to release a new Driver? Fortunately I used a cloned HDD to update from Win7 Pro to Win 10 Pro so was able to reinstall the original HDD with Win 7 to get the PC online and working again til I can find a solution. Any suggestions other than dump Win10 Pro and do a clean install of Win 10 instead?
https://support.microsoft.com/en-nz/help/10741/windows-10-fix-network-connection-issues