Unable to update KS from 7.4.0 to 7.4.6

I am trying to update from KS version 7.4.0 to 7.4.6, after checking for update from within KS, it showed there is a new version available 7.4.6. I clicked on download, then “install and re-launch” but after that KS closes and it does not auto update the version.

Anyone facing similar issue?