There is no version upgrade supported for the Client Login Extension. You need to uninstall the existing version before installing a newer version of it. If you try to install a new version on top of an existing version, you are presented with an option of repairing or removing the existing version. The Repair option is same as the Microsoft Windows Repair option. If you select it, it troubleshoots the installation issues, such as missing file or configuration issues. You can use the Repair option to return to the normal state. The Remove option uninstalls the existing version of Client Login Extension.
If you make changes to the MSI installation file, remove the existing version of the Client Login Extension before running the MSI install program again.