Install windows client keep upgrading with 'failed to invoke command' error

Sometimes windows client may not be uninstalled cleanly. When check windows control panel, Application Features, do not see the windows client listed there. However, when run the windows client .exe installer, instead of Installing, it shows Upgrading and hits error 'failed to invoke command'.

When hit the error, follow the steps here to fix:

. Open Windows Services
​

Check whether you still see the service GladFileMonSvc and gladrmountsvc.

. If so, open command prompt as Administrator. Run

sc delete <service name>

to delete the service.

For example, to delete GladFileMonSvc, run

sc delete GladFileMonSvc

After that, re-run the windows client installer.