We currently have a root server and multiple probe servers running on Windows Server 2008 R2 virtual machines. Because Server 2008 R2 is approaching End of Life, we want to upgrade these servers to Server 2012 R2 or Server 2016 by upgrading the OS in-place. This is as opposed to building a new server and moving PRTG to it (for several reasons we only want to do that as a last resort).
Are there any caveats or things we should be aware of regarding PRTG before we perform the OS upgrade? For the sake of our sanity, we would like this process to complete as smoothly as possible.
Thank you in advance!