I was attempting to install VMware vCenter Server in one of my test environments where the install would fail upon attempting to configure and install the pre-requisites required. On investigating the application log, I found the following error message: Product: VMware vCenter Server — Error 25073.The Microsoft .NET Framework 3.5 SP1 installer returned an error code.  As … More Unexpected error refreshing Server Manager: Exception from HRESULT:0x800F0818