Changes

# Make shortcut to cmd.exe, click on it with right button and select runas admin, then "cd" to path where installer is and run your msiexec command.

# For install across network or localy use "psexec" from Systeminternals with localhost and "-h" parameters, eg. "psexec -h localhost msiexec /le wpkg_error.txt /i WPKG_Client_1.3.14-x64.msi"