The vendor has published 1 unique mention(s) for this bug: 1. Single-session VDA upgrades to 2203 Cumulative Update 1 can fail and the following error message appears: IcaConfigConsole.exe failed with error code -4 As a workaround, create the following registry key on the target machine before the upgrade: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Citrix\wfshell\TWI For more information, see Knowledge Center article CTX463588. Note: This issue was addressed in Cumulative Update 1100 - the respin of Cumulative Update 1. Latest urls for this bug: 1. https://docs.citrix.com/us/en/citrix-virtual-apps-desktops/2203-ltsr/whats-new/cumulative-update-1/fixed-issues.html