Hello all I am a student new to virtualization I have a ProLiant physical server with windows server 2019 installed. I had issues with the mouse during the installation. After doing some online investigations, I learnt that installing guest addition could fix the issue. I did install the guest addition successfully but doing so prevents me from using the mouse completely on the windows server guest virtual machine. Can someone help me guide me towards a solution? Appreciate it.
Are you sure you are correct here? "guest addition" sounds like something from virtualbox ...
So do you have VMware vSphere (ESXi) installed and Windows Server 2019 as a virtual machine? In that case you should install VMware Tools in the VM.
If you have Windows as the bare metal OS and maybe VMware Workstation installed and the mouse is not working on a VM running on that, the answer would still be to install VMware Tools but you might want to ask around https://communities.vmware.com/t5/Desktop-Hypervisor/ct-p/16000-home if that doesn't help.
Now, if you have no VMware product installed, then the VMware communities are most likely not the best place and you should look for something product specific from the solution you are using (Hyper-V / VirtualBox etc.).
Ok, so you do have ESXi (what version?) installed and a vanilla Server 2019 (from "MSDN"?) and you installed VMware Tools (what version?) and at no point did you have any mouse? Not in the VMRC console / nor web console / nor via RDP? Do you see a mouse device in the VM?
After the during and after the initial installation of windows server 2019, the mouse activity was lagging with double cursors and as soon as the VMware tools gets install successfully, when I click on the guest vm nothing happens but I am able to use the mouse on the esxi host.
Server 2019 is far from being supported or tested on ESXi 5.5 ... What was the guest OS you selected, 2012? You might want to check the controllers that are attached by default to a 2012 VM ... USB 2.0 isn't one of them
If that doesn't fix it, spend your time on getting your host to 6.7, there are ways around unsupported CPUs and you can find drivers for most devices. And please, if you are going to ask questions about a product / version that's been out of support for 2.5 years, mention it.