Citrix Gateway Plug-in for Windows Security Bulletin for CVE-2022-21827

A vulnerability has been discovered in Citrix Gateway Plug-in for Windows Citrix Secure Access for Windows. If exploited, this issue would allow an adversary, who has gained local access to a computer with Citrix Gateway Plug-in installed, to corrupt or delete files as SYSTEM. This issue has the...

Citrix Workspace App for Linux Security Update

A vulnerability has been identified in Citrix Workspace app for Linux that could result in a local user elevating their privilege level to root on the computer running Citrix Workspace app for Linux. The vulnerability has the following identifier: CVE ID| Description| Vulnerability Type|...

Troubleshooting thin provisioning for shared block storage on XenServer

XenServer and Citrix Hypervisor use GFS2 to provide the ability to set up thin provisioning with a shared block storage device. Pools that use GFS2 to thin provision their shared block storage are clustered and behave differently to pools that use shared file-based storage or LVM with shared bloc...

Error: The Pool Failed to Enable External Authentication in XenServer

When attempting to enable external pool authentication in a XenServer 5.6 Feature Pack 1 pool, the operation fails with one or more of the following errors: “Error: The pool failed to enable external authentication.” “Error: Enabling Active Directory Authentication on pool '' - Could not enable...

How to update vCenter Server certification in Citrix environments

Outlines the steps of how to update vCenter Server certification in on-premises and Cloud DaaS Citrix environments...

Citrix Files WebApp: How to Upload a File

This article describes how to upload a file to Citrix Files. In order to upload files, you must have the Upload permission on the destination folder. If you don't see the "Upload" option, you do not have the correct permissions and will need to contact your account administrator. TIP! Can't see t...

Citrix XenServer Multiple Security Updates

Description of Problem A number of security vulnerabilities have been identified in Citrix XenServer that may allow a malicious administrator of a guest VM to compromise the host. These vulnerabilities affect all currently supported versions of Citrix XenServer up to and including Citrix XenServe...

CVE-2016-9603 - Citrix XenServer Security Update

Description of Problem A security issue has been identified within Citrix XenServer. This issue could, if exploited, allow the administrator of an HVM guest VM to compromise the host. The following vulnerability has been addressed: CVE-2016-9603 High: QEMU: Cirrus VGA Heap overflow via display...

XenServer and Citrix Hypervisor Security Update for CVE-2025-27462, CVE-2025-27463, CVE-2025-27464

Description of Problem Issues have been identified in the XenServer VM Tools for Windows that allow an attacker who has the ability to execute arbitrary unprivileged code within a guest Windows VM to compromise that same VM. This issue affects Windows VMs running on either XenServer 8.4 and Citri...

Citrix XenServer Multiple Security Updates

Description of Problem A number of security vulnerabilities have been identified in Citrix XenServer that may allow a malicious administrator of a guest VM to compromise the host. These vulnerabilities affect all currently supported versions of Citrix XenServer up to and including Citrix XenServe...

NOTICE of STATUS CHANGE ANNOUNCEMENT FOR NETSCALER Traffic Domain BASED FEATURES & FUNCTIONALITIES

Citrix Systems, Inc. announces a Notice of Status Change NSC for Citrix ADC Traffic Domain features and functionalities.Table 1 below explains Citrix ADC life cycle management milestones as well as important information about dates and options during this period. The dates and milestones provided...

Citrix XenMobile 10.x Multiple Security Updates

Description of Problem A number of security vulnerabilities have been identified in Citrix XenMobile Server. The vulnerabilities have been assigned the following CVE numbers. Affecting XenMobile Server 10.7 and 10.8: CVE-2018-10653 High: XML External Entity XXE Processing Vulnerability in Citrix...

Session Sharing Explained with Troubleshooting Steps

This article explains session sharing and discusses some common scenarios. Session sharing is the ability of a seamless published application to be executed over the same connection as other seamless applications that are already running on the same server, under an existing Session ID of a user...

Citrix Hypervisor Multiple Security Updates

Description of Problem Several issues have been discovered that affect Citrix Hypervisor 8.2 CU1 LTSR and may allow malicious privileged code in a guest VM to: i Compromise an AMD-based host via a passed through PCI device: CVE-2023-34326 ii Compromise the host when a specific administrative acti...

Citrix SD-WAN Security Update

Description of Problem Multiple denial of service vulnerabilities have been identified in the Citrix SD-WAN Appliance and Citrix SD-WAN Center Management Console. These vulnerabilities could permit a remote attacker to cause a denial of service by causing a host crash or by causing reduced servic...

CVE-2018-3639 - Citrix XenServer Security Update

Description of Problem CVE-2018-3639 Speculative Store Bypass Disable is an issue that may affect third-party software that runs in guest VMs on Citrix XenServer. This is not an issue caused by Citrix XenServer and Citrix is unaware of any means of exploiting this issue against XenServer itself...

XenServer and Citrix Hypervisor Security Update for CVE-2024-5661

An issue has been identified in both XenServer 8 and Citrix Hypervisor 8.2 CU1 LTSR which mayallow a malicious administrator of a guest VM to cause the host to become slow and/or unresponsive. This issue has the following identifier: CVE-2024-5661 CVE-2024-5661 affects all deployments. Summary CV...

UviProcessExcludes registry setting disappears after Citrix VDA upgrade

After upgrading Citrix VDA, the UviProcessExcludes registry setting disappears...

Reporting: "Error retrieving data source. Return code=257. Error message=Operation not permitted."

The message "Error retrieving data source. Return code = 257. Error message = Operation not permitted" is displayed when clicking Reporting on NetScaler:...

Citrix Hypervisor Security Bulletin for CVE-2022-33745

A security issue has been identified in Citrix Hypervisor 7.1 LTSR CU2 that may allow privileged code in a PV guest VM to fail to perform management operations. The issue has the following CVE identifier: CVE-2022-33745...

How to install custom FreeBSD configuration files on a Netscaler

As a Netscaler is an appliance, the root filesystem which is a RAMDisk is restored from a non-modifiable image during every boot. As such, modifications to any FreeBSD configuration files in /etc will be erased upon reboot. This article shows how to properly install supported modifications to...

Citrix Hypervisor Security Update.

Description of Problem A vulnerability has been found in Citrix Hypervisor formerly Citrix XenServer that may allow an unauthenticated attacker with the ability to send traffic to a host over a management or storage network to cause the host to crash. This vulnerability is identified as: •...

Launch of Resources from CWA 2402,2403 or 2405 may fail if MSTeams Citrix plugin is installed

Affected versions : CWA release 2402, 2403 or 2405 When launching a published Desktop users are presented with a grey window momentarily. This then closes but shows connected in connection center Application launches will simply fail but the below error will be observed in the event logs In the...

Citrix SDWAN Security Bulletin for CVE-2024-2049

A vulnerability has been identified that impacts Citrix SD-WAN Affected Versions: The vulnerability affects the following supported versions of Citrix SD-WAN SD-WAN Standard/Premium Editions on or after 11.4.0 and before 11.4.4.46 Summary: SDWAN contains the vulnerability mentioned below...

Citrix Hypervisor Multiple Security Updates

Description of Problem Several issues have been identified within Citrix Hypervisor, which could, if exploited, allow: privileged code in a PV guest VM to read a single uninitialized 4kB page of memory that may contain data left by a previous VM privileged code in a guest VM to cause the host to...

CVE-2019-11634 - Improper Access Control Vulnerability in AppDNA

Description of Problem A vulnerability has been identified in AppDNA that could result in access controls not being enforced when accessing the web console potentially allowing privilege escalation and remote code execution. This vulnerability has been assigned the following CVE number: •...

Citrix Workspace App for Windows crash due to .NET 9.0.5

If you have any Current Release of Citrix Workspace App 2409.10 or higher, or LTSR version 2402 CU3 or higher and .NET Desktop Runtime 9.0.5 installed, receiver.exe could crash post session launch. Post crash, the systray icon would show up only two options - Open and Exit...

VDA machines stuck at Initializing for Hybrid Azure AD join

For Citrix MCS provisioned Hybrid Azure AD joined machine catalogs, the VDA machines might be stuck at “Initializing” status after startup. And when you login to the VDA machines and execute the “dsregcmd /status /debug” command, you will find below error message under “Diagnostic Data” “Server...

CVE-2018-3665 - Citrix XenServer Security Update

Description of Problem An issue has been identified in certain CPUs that may allow code running in a guest VM to read data from another process in the same VM or another VM running on the same host. The data that can be read is limited to specific CPU registers rather than memory or disk storage;...

Citrix Workspace app for Windows Security Bulletin CVE-2024-6286

Description of Problem A vulnerability has been discovered that impacts the Citrix Workspace app for Windows. Refer to below for further details: Affected Versions The vulnerability affects the following supported versions of the Citrix Workspace app for Windows Current Release CR Citrix Workspac...

NetScaler - Error "Registration of device failed" when adding license server.

After recently deploying and registering a NetScaler Console formerly ADM Agent and trying to add it as a license server on a NetScaler device you get the error "Registration of device failed Sending request to mgmtserver failed"...

CVAD and DaaS: Troubleshooting missing logon duration in Citrix Director and Cloud Monitor

To troubleshoot missing logon duration information in monitor, please validate the prerequisites:https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/director/troubleshoot-deployments/user-issues/user-logon.htmlprerequisites Ensure Citrix Profile Management WMI Plug-in is installed:...

Start menu may stop responding if December 2024 or newer security updates installed on Windows 11

Start menu within a Windows 11 VDI session may not respond for some users after installing Microsoft's December 2024 or newer security updates TPV-6122 Solution This issue is fixed in the Citrix Virtual Apps and Desktops 7 2503 and newer versions. If users are using LTSR or older versions of Citr...

Citrix Hypervisor Security Bulletin for CVE-2022-33748 & CVE-2022-33749

Several security issues have been identified in Citrix Hypervisor 8.2 LTSR CU1. These are: A malicious privileged user in a guest VM working in collaboration with a malicious privileged user in another guest VM can cause the host to crash or become unresponsive. This issue has the following CVE...

Target device boot failure "EFI system partition (ESP) error: Unsupported, Streaming aborted"

This PC has UEFI instead of BIOS, by leveraging Booting from the NIC using DHCP. PVSNBPX65.EFI is already downloaded. Now the error is:" Boot from local disk. "EFI system partition ESP error: Unsupported, Streaming aborted" The error disappears if PC inserts a local hard drive...

Citrix Hypervisor Security Update

Description of Problem A number of vulnerabilities have been found in Citrix Hypervisor formerly Citrix XenServer that allow the host to be compromised by: i. Privileged code in a guest VM that has been assigned a PCI passthrough device ii. Privileged code in a PV guest VM iii. Unprivileged code ...

Citrix XenServer Multiple Security Updates

Description of Problem A number of security vulnerabilities have been identified in Citrix XenServer that may allow a malicious administrator of a guest VM to compromise the host. These vulnerabilities affect all currently supported versions of Citrix XenServer up to and including Citrix XenServe...

Citrix Session Printers are not mapped after logon

Unable to connect the printer from user end. Session printers are not mapped with following event in the Application event log: Event id: 1105 Cloud not add printer connection to printer \\, for the user username. Error condition is: The Printer name is invalid...

Unable to Launch Applications After VDA Upgrade to 1912 CU9 Due to Missing Working Directory

Please note: You can download the required file from the Citrix downloads website by visiting the following link:https://www.citrix.com/downloads/citrix-tools To apply the updated DLL with the tested code changes, please replace the files in the specified locations on the Multi-Session VDA as...

Provisioning Services: Service Account Permissions and Configuration for Accessing PVS SQL Database

This article provides a description on how different service accounts should be configured to grant adequate SQL permissions. Service Account Configuration for Accessing SQL Service users are the accounts under which the Stream and Soap services run on a Provisioning Services PVS server which nee...

PVS - Imaging Wizard fails when creating Vdisk. Error after restart 'Imaging wizard did not restart'

When attempting to create a vDisk, the Imaging Wizard gets as far as requiring a reboot, but after the restart returns the error 'Imaging wizard did not restart'...

Citrix Hypervisor Security Update

An issue has been identified in AMD CPU hardware that may allow code in a guest VM to infer the value of in-memory data in other guest VMs. Although this is not an issue in the Citrix Hypervisor product itself, Citrix is releasinghotfixes that include mitigations for this hardware issue. This iss...

Citrix ShareFile Storage Zones Controller Security Update

A security issue has been identified in Citrix ShareFile storage zones controller which, if exploited, would allow an unauthenticated attacker to remotely compromise the storage zones controller. The issue has been given the following identifier:CVE-ID| Description| Type| Pre-requisites...

Citrix Endpoint Management (CEM) Security Update

Description of Problem Multiple vulnerabilities have been discovered inCitrix Endpoint Management CEM,also referred to asXenMobile. These vulnerabilitieshavethe following identifiers: CVE-2020-8208 CVE-2020-8209 CVE-2020-8210 CVE-2020-8211 CVE-2020-8212 CVE-2020-8253 The following versions ofCitr...

Citrix Hypervisor Security Update

Description of Problem Several security issues have been identified in Citrix Hypervisor formerly Citrix XenServer that may allow privileged code in a guest VM to cause the host to crash or become unresponsive. In addition, unprivileged code in a PV guest VM may be able to cause that guest VM to...

What is the Default Password for App Layering?

Question: What is the default root password for the Citrix Enterprise Layer Manager ELM via console for App Layering Unidesk? Answer: The default username and password sets for App Layering Unidesk are as follows: rootvia the ELM virtual appliance console - two possible defaults: v9Yx6uj OR...

Citrix Provisioning - SoapService errors in the event viewer after installing 2042 CU2

Since installing 2402 CU2 there are multiple errors in the event viewer. The event logged during Citrix PVS Soap Server start: Source: SoapService Event ID: 1 Level: Error Event Data:MapiException: ErrorCodeOtherException An unexpected MAPI error occurred. The event logged every 5 minutes: Source...

VDA Installer Only Displays Splash Screen then Closes

When installing the workstation VDA, the Installer Splash Screen appears for a second then disappears. Nothing is logged in the installer logs There are no crashes reported in the eventlogs DebugView shows the installer exits with status Code: 1 Using the Citrix VDA Cleanup Utility Tool does not...

Fail to launch session with Event ID6 error after changing display setting.

Launch session takes 67 seconds and then fails. Check the Event Log, there are several Event ID 6 Errors recorded. Error Message: Citrix ICA could not configure Thinwire and switch to the remote ICA display. Rebooting the workstation or logging in to the console will fix this...

Service 'Citrix Workspace Updater Service' (CWAUpdaterService) Failed to Start When Installing CWA

Failed to install CWA. Error message shows:Service 'Citrix Workspace Updater Service' CWAUpdaterService failed to start, Verify that you have sufficient privileges to start system services...