It means exactly what it says, google how to find kaspersky's quarantine section. Kaspersky puts suspicious files inside that quarantine and the files stay there until the user decides what to do with it - purge it or restore it. Restoring it will restore the file and adds some exclusions to it. However since manual exclusions aren't really working, I doubt that'd work too, but you're free to try.
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Laserpoint29
@Laserpoint29