XenServer WLB - The connection was reset

When attempting to connecting a Pool to the WLB server, receiving an error "The connection to the WLB server was reset". The stunnel process is running and the WLB server was rebooted as a troubleshooting step, but the issue still occurs...

XenServer Hardware Compatibility List Explained

This article provides an understanding of the Hardware Compatibility List HCL for Citrix Hypervisor and XenServer. This article also contains information about how products get qualified for inclusion in the HCL and what listing in the HCL represents from a support perspective. Background The...

XenServer 7.1 WLB consultation has failed

WLB Consultation has failed messages seen on XenCenter...

Citrix XenServer Multiple Security Updates

Description of Problem A number of security vulnerabilities have been identified in Citrix XenServer that, depending on configuration, may allow a malicious user of a PV guest VM to crash or compromise the host. These vulnerabilities affect all currently supported versions of Citrix XenServer up ...

Time not getting sync on XenServer with NTP

High NTP offset and jitter while delay is low. This can be seen with "ntpq -p". Offset is the time difference between the local server and remote Jitter is the difference between the last and current offset measurements, thus if it is high, it means that the offset is increasing more over time...

How to Remove a DVD Drive from a XenServer Virtual Machine

This article describes how to remove a DVD drive from a XenServer virtual machine...

How to Collect XenServer Guest VM Operation Log

This article explains how to collect XenServer guest vm operation log...

XenServer metadata restore failed "No valid Btrfs found on <metadata backup vdi path> Superblock bytenr is larger than device size <vm import command>

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CVE-2016-2074

creationtimestamp| type| source ---|---|--- 2018-12-31 06:47:32+00:00| seen| https://www.kyberturvallisuuskeskus.fi/fi/haavoittuvuuksia-citrix-xenserver-virtualisointiohjelmistossa...

CVE-2018-7541

creationtimestamp| type| source ---|---|--- 2018-12-31 06:47:32+00:00| seen| https://www.kyberturvallisuuskeskus.fi/fi/haavoittuvuuksia-citrix-xenserver-virtualisointiohjelmistossa...

CVE-2018-7540

creationtimestamp| type| source ---|---|--- 2018-12-31 06:47:32+00:00| seen| https://www.kyberturvallisuuskeskus.fi/fi/haavoittuvuuksia-citrix-xenserver-virtualisointiohjelmistossa...

XenServer - Not Able to Enable HA on Pool

Not able to enable HA on pool...

How to Set Up an Additional Hard Drive in XenServer

This article describes how to add an additional hard drive in XenServer...

Excessive Retries Occur when a Provisioning Server Target Device is Deployed on a XenServer Platform

When the Citrix Provisioning Server target device is deployed on a XenServer platform, the device may experience some of the following symptoms: Excessive retries while performing a physical to virtual target build Slow ICA performance when using XenDesktop Freezing or locking with XenDesktop whi...

Citrix XenServer Multiple Vulnerabilities (CTX239432)

The version of Citrix XenServer running on the remote host is missing a security hotfix. It is, therefore, affected by multiple vulnerabilities. All of which allow a denial-of-service attack and one allowing privilege escalation as well as information disclosure. Please refer to the vendor adviso...

Citrix XenServer Security Update

Description of Problem A number of security vulnerabilities have been identified in Citrix XenServer that have deployment-dependent impacts. These issues affect the following supported versions of Citrix XenServer: Citrix XenServer 7.6 Citrix XenServer 7.5 Citrix XenServer 7.1 LTSR CU1 Citrix...

Citrix XenServer Nested VT-x Instruction Guest-to-Host DoS (CTX239100)

The version of Citrix XenServer running on the remote host is missing a security hotfix. It is, therefore, affected by by a guest-to-host denial of service vulnerability. C Tenable Network Security, Inc. include"compat.inc"; if description scriptid118856; scriptversion"1.4"; scriptcvsdate"Date:...

CVE-2018-18883 - Citrix XenServer Security Update

Description of Problem A security issue has been identified in Citrix XenServer that may allow a malicious administrator of an HVM guest VM to crash the host. This issue affects the following versions of Citrix XenServer: Citrix XenServer 7.6 Citrix XenServer 7.5 Citrix XenServer 7.1 LTSR CU1 The...

Troubleshooting common issues with XenServer clustered pools and GFS2 SRs

XenServer uses GFS2 to make thin provisioning available by using block-based storage devices that are accessed through iSCSI software initiator or Hardware HBA. This article provides a guide for troubleshooting common issues when GFS2 SRThin Provisioning is being used in XenServer or Citrix...

Citrix XenServer Multiple Vulnerabilities (Foreshadow) (CTX236548)

The version of Citrix XenServer running on the remote host is missing a security hotfix. It is, therefore, affected by multiple vulnerabilities including L1 Terminal Fault L1TF and a local code execution vulnerability. C Tenable Network Security, Inc. include"compat.inc"; if description...