I was logging into client machines as domain user with Enterprise/Domain admin privileges and able to access a shared folder containing MSI installation packages without any problem. I'm able to install the MSI using the command line and msiexec when logged into the computer, so I know the MSI is working ok at least.

I'm rather new to deploying via group policy so what other information would be helpful in determining the issue? I tried a different MSI with the same results. When I reboot and log in again I simply get the same messages about needing to perform the update before the next logon. The system will wait for Group Policy processing to finish completely before the next startup or logon for this user, and this may result in slow startup and boot performance. The Group Policy Client Side Extension Software Installation was unable to apply one or more settings because the changes must be processed before system startup or user logon.The installation of software deployed through Group Policy for this user has been delayed until the next logon because the changes must be applied before the user logon. Failed to apply changes to software installation settings.The removal of the assignment of application XStandard from policy install failed.The assignment of application XStandard from policy install failed.But these are the errors I'm getting in the System event log after logging in: I'm trying to deploy an MSI via the Group Policy in Active Directory.

Install spiceworks agent via gpo