we have a windows 2016 vm which is our exchange 2016 server.
we are trying to install the cumulative update for 2019-06, which installs in the first instance, but when we restart the server, as required, we are told that it could not be installed and is removed. the server is then restarted, and we see that the update did fail.
i notice that this has being happening for the past 4 cumulative updates, although several smaller updates like stack updates etc install ok.
i have tried downloading the kb manually and installing, but again thus too fails.
can anyone advise how we can resolve this issue, so that we can get the cumulative updates installing again?
any advice much appreciated.