Recently Pause protection and Settings options were disabled in the trey icon context menu.
Restoring the settings to default and restarting the computer did not help ....both remain greyed-out.
This has happened before and at that time I had to uninstall Kaspersky Free. I then installed Kaspersky Cloud Security Free,
which has recently updated to Kaspersky Free
....under Kaspersky Cloud Security Free this grey-out never happened and I have been using
Kaspersky Cloud Security Free for a few years until the recent upgrade/update to Kaspersky Free .