Article number
Affected Versions
Source Hypervisor
Target Hypervisor

Failover Of Windows 2008 R2 Server To AWS Is Not Reachable Due To Old XEN Drivers Present On Server

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Root Cause

The latest version of ZertoTools for AWS now includes enhancements to support Windows 2008 R2 servers.  ZertoTools for AWS prior only supported Windows 2012 and 2016 servers and Windows 2008 R2 servers required XEN drivers be installed to allow for successful Failover to AWS.  Installing ZertoTools on servers where XEN drivers already existed, can result in unexpected behavior upon failover where ZertoTools will fail to run leading to a recovered server that is not reachable via network.


A failover of a Windows 2008 R2 server to an AWS recovery site is not reachable over the network after installing/running ZertoTools for AWS


1) Uninstall XEN drivers for each server in the associated VPG
2) Re-install ZertoTools for AWS on each server in the associated VPG
3) Start a Failover Test and select a checkpoint
4) If the Failover Test still creates a recovery server that is not reachable, contact Zerto Support for further assistance.