Fixed in QAS 4.1.3 and up.
Upgrade to the latest QAS client version. Please go to https://support.oneidentity.com/authentication-services/download-new-releases to download the latest software.
The Changelog.txt describes the defects fixed. Depending on version you are upgrading from, a reboot or a restart of any process using the vasd libraries may be required to free up leaked resources after upgrading. Upgrading from QAS 4.0.3 and QAS 4.1.0 versions requires a reboot.