XenServer Security

Introduction We work hard to keep our product secure and endeavour to remediate any exploitable issues. To this end, we regularly release Security Bulletins for vulnerabilites that might affect Citrix Hypervisor and XenServer and software updates that address these vulnerabilities. Overview of th...

XenServer Software Updates

Introduction We provide regular updates to Citrix Hypervisor, XenServer, and XenCenter. These updates can include bug fixes, improvements, and new features. Overview of the Article This article assists you in finding resources that inform you about Citrix Hypervisor and XenServer software updates...

Security Bulletins for XenServer

This article lists historic security bulletins published for XenServer 8.4. We recommend subscribing to security bulletin email alerts for timely notification of new bulletins. The bulletins advise about any software updates that have been published to address the issues. We highly recommend that...

CVAD wizard fails with device name # is invalid when PVS-Accelerator is enabled

We are using XenServer 8.0 and PVS Accelerator the CVAD wizard will fail to create new devices. When an AOT trace is captured and analyzed you will see the following errors in the logs: PVSDllHypervisorPlatformsAO,,0,,5,Information,"XenAPI failure, error description:...

Multipath tools

In enterprise environments where uptime and performance are critical, ensuring continuous and efficient access to storage is paramount. Multipathing is a technique used to provide multiple physical paths between the host and the storage devices. XenServer manages these multiple I/O paths, enablin...

How to collect XenServer Conversion Manager logs

Collect XenServer Conversion Manager logs for analysis...

XenServer and Citrix Hypervisor Security Update for CVE-2024-31143 and CVE-2024-31144

Description of Problem Two issues have been identified, the first of which affects both XenServer 8 and Citrix Hypervisor 8.2 CU1 LTSR and the second of which affects Citrix Hypervisor 8.2 CU1 LTSR only. The first issue, which affects both XenServer 8 and Citrix Hypervisor 8.2 CU1 LTSR, may allow...

Backup and restore capabilities in XenServer xsconsole

XenServer hosts store metadata about VMs and associated resources such as storage and networking. This metadata forms a complete view of all VMs available across the pool. You can backup this database to recover from physical hardware failure and other disaster scenarios. The legacy backup and...

Xenserver Troubleshooting : Comprehensive Guide

Introduction Instances where XenServer encounters various errors preventing its connection to XenCenter Overview of the Issue In different situations, XenServer experiences connectivity issues with XenCenter, possibly due to various factors. This article will outline different scenarios and...

XenServer VM Tools

Introduction Instances where XenServer encounters various errors while installing XenServer VM tools Overview of the Issue In different situations, XenServer has some issues when installing VM tools, possibly due to various factors. This article will outline different scenarios and potential...

Xenserver Configuration: Comprehensive Guide

Introduction This article will direct you to resources that provide guidance on configuring basic pools for XenServer Top Knowledge Content Basic Configuration guide for a XenServer Pool CTX128391 - How to Remove a Server from a XenServer Pool that Contains Only One Host CTX216127 - How to change...

Xenserver Networking: Comprehensive Guide

Introduction This article aims to assist you in addressing network-related issues or configurations on XenServer Overview of the Article This article will direct you to additional articles covering networking on XenServer, focusing on configuration and troubleshooting. Appendix: Top Knowledge...

Xenserver Upgrade: Comprehensive Guide

Introduction This article aims to assist you in XenServer upgrade process and troubleshooting Overview of the Article This article will assist you in finding resources that discuss upgrading procedures and troubleshooting techniques Appendix: Top Knowledge Content Troubleshooting Common Problems...

Xenserver Storage: Comprehensive Guide

Introduction This article will assist you in resolving issues with unavailable VDI Virtual Disk Image. Overview of the Issue In different situations, XenServer experiences issues with starting VM’s , taking a snapshot or scan of SR’s and failing with error “VDI is not available ”. This article wi...

Troubleshooting Linux Virtual Machines in XenServer

This article describes about troubleshooting Linux virtual machines in XenServer. Serial console was used to access UNIX server consoles and most of the network devices switches, routes. The simplicity of serial port hardware and its universality make them popular. Serial console apart from...

How to Adjust the Bond Balance Interval in XenServer 6.x

XenServer 6.1.0 introduces a change to the NIC bonding load balancing algorithm for active-active bonds in the vSwitch network stack. In past releases, active-active bonds were set to rebalance load every 10 seconds. However, in XenServer 6.1.0 active-active bonds on the vSwitch rebalance load...

Applying Security Hotfixes to XenServer on NetScaler SDX Appliance with Software Release 9.3 and 10

This article describes how to apply the hotfixes required to remediate the security vulnerabilities detailed in security bulletin CTX134876 -Citrix NetScaler SDX Multiple Security Updates. Determining the Version of XenServer on the NetScaler SDX Appliance To determine what version of XenServer y...

How to Reset the XenServer Host Password on a CloudBridge 2000/3000/4000/5000

This article describes how to reset the XenServer Host password on a CloudBridge 2000/3000/4000/5000. The procedure can be completed when credentials are not working to access the SVM, XS, and Serial Console...

How to Disarm Fencing When Using High Availability in XenServer

This article describes how to disarm High Availability HA and prevent XenServer host from fencing. Disarming HA does not stop HA logging...

Recovering Virtual Machines from Failed Pool Member

In the event of a XenServer host power failure, any Virtual Machines VMs running on that host might not be displayed in XenCenter. This is the expected behavior without High Availability HA enabled. The following is a XenCenter screen shot of the pool prior to the failure of the host named...