asked on Is it possible to upgrade server 2012R2 to Server 2016 by using a mounted ISO
We would like to try upgrading one of our servers at a remote site (in another state) to server 2016. The server is a new build of Server 2012R2 so it doesn't currently have any roles or features installed making it a good candidate for an upgrade. Is it possible to upgrade the server using a mounted ISO of Server 2016 since they do not have any installation media at their site? I am sure the installation would kick off but I am concerned that it would hang when it rebooted.
Windows 10AzureWindows Server 2016
Last Comment
McKnife
just as an fyi...as much as Microsoft has come a long way with their in-place upgrade technologies, i would never do an inplace upgrade of server OS unless i absolutely had to. A Server OS is something you want to run optimally. Just personal preference. The fact that your example does not have many roles and features installed makes it an ideal candidate for a clean install as well :p
I can only agree with all that's been written.
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https://technet.microsoft.com/en-us/windows-server-docs/get-started/supported-upgrade-paths