The vendor has published 1 unique mention(s) for this bug: 1. In an AWS environment, Server VDA rollbacks to a XenApp and XenDesktop 7.15 LTSR CU2 image or snapshot might fail. As a workaround, extend the rollback timeout to a timeout value of 30 minutes with the following PowerShell cmdlet:Set-ProvServiceConfigurationData –Name ImageManagemntPrep_preparationTimeout –Value 30 Latest urls for this bug: 1. https://docs.citrix.com//en-us/xenapp-and-xendesktop/7-15-ltsr/whats-new/known-issues