The vendor has published 1 unique mention(s) for this bug: 1. Any catalogs using MCSIO write cache for storage optimization, please make sure to install the Citrix MCS I/O driver as part of the VDA install and upgrades. For more information, see Storage shared by hypervisors and Configure cache for temporary data. The MCS I/O driver missing on the VDA may create issue when you are updating the catalog. Latest urls for this bug: 1. https://docs.citrix.com/us/en/citrix-virtual-apps-desktops/2607-ltsr/whats-new-node/known-issues.html 2. https://docs.citrix.com/us/en/citrix-virtual-apps-desktops/current-release/whats-new-node/known-issues.html