The vendor has published 1 unique mention(s) for this bug: 1. The Microsoft Windows winlogon.exe process might exit unexpectedly causing sessions to close. The issue occurs because of the faulting icagfxstack.dll module when you upgrade a VDA from version 1912 LTSR CU4 to 2203 LTSR. Latest urls for this bug: 1. https://docs.citrix.com//en-us/citrix-virtual-apps-desktops/2203-ltsr/whats-new/cumulative-update-3/fixed-issues