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...

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...

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...

CVE-2015-8277 - Citrix Licensing Security Updates

Description of Problem A vulnerability has been identified in Citrix Licensing that could allow a remote, unauthenticated attacker to crash the License Server and potentially execute arbitrary code on the server. This vulnerability affects the following products: Citrix License Server for Windows...

Citrix Workspace app for HTML5 Security Bulletin CVE-2024-6148 and CVE-2024-6149

Description of Problem Two vulnerabilities have been discovered that impact the Citrix Workspace app for HTML5. Refer to below for further details: Affected Versions The vulnerabilities affect the following supported versions of the Citrix Workspace app for HTML5. Citrix Workspace app for HTML5...

NetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2024-5491 and CVE-2024-5492

Description of Problem Two vulnerabilities have been discovered in NetScaler ADC formerly Citrix ADC and NetScaler Gateway formerly Citrix Gateway. Refer to below for further details: Affected Versions The following supported versions of NetScaler ADC and NetScaler Gateway are affected by the...

The digital signature on wfica32.exe is invalid (error: 1116)

Post upgrading the Citrix Workspace App to 2302 the applications are not launching. Error message while we launch the application. "The digital signature on wfica32.exe is invalid error: 1116"...

App Layering/Unidesk: Boot failure after windows updates cmimcext.sys

Windows updates causes server to fail boot with error message file missing cmimcext.sys. BSOD with0xc000000f stop code. This can apply to a newly imported OS layer or to a new version of an existing OS layer...

How to troubleshoot PVS TD bootup error 'BNIStack failed,network stack could not be initialized'

In PVS environment, a very common error is the 'BNIStack failed' loop restart error During target device boot up, a 'BNIStack failed,network stack could not be initialized' occur, then target device had to reboot again, and the next new bootup encounter same error and reboot again and again. This...

Citrix DaaS - Unable to change Master image for the machine catalog

When attempting to use the "Change Master Image" option in the machine catalog properties, the process may fail with the following error: "Preparation of the Master VM Image failed. Make sure that the selected image is a supported OS and has a valid VDA installed" However creating a new catalog...

Citrix Virtual Apps and Desktops 2402 CU2 expired certificate

Citrix Virtual Apps and Desktops CVAD 2402 LTSR Cumulative Update 2 CU2 2402.0.2100 contains installers and binaries signed with a now-expired code signing certificate. File signatures are considered valid if either: A timestamp was included at the time of signing, or The certificate used for...

ADC: ICMP Timestamp Request Remote Date Disclosure Vulnerability (CVE-1999-0524)

Vulnerability scan is flagging NetScaler device as vulnerable to ICMP Timestamp Request Remote Date Disclosure Vulnerability CVE-1999-0524 even when an ACL already exists to block ICMP type 13 traffic...

Netscaler CVE & Security Guide

Introduction Begin with an introduction to the main issue topic, explaining its significance and how the hub article serves as a central resource for related information. Overview of the Issue Provide a brief yet comprehensive overview of the issue, outlining the common challenges and key points...

How to Fix the Uninstall of StoreFront

This article describes how to fix the uninstall of Citrix StoreFront when installed using a non-English UI. When StoreFront is installed under these conditions, uninstall will fail with error code 1605, erroneously indicating the product is not installed...

CVE-2016-6273 - Denial of Service Vulnerability in Citrix License Server

Description of Problem A vulnerability has been identified in the Citrix License Server for Windows and Citrix License Server VPX that could allow a remote, unauthenticated attacker to crash the License Server. This vulnerability affects all versions of Citrix License Server for Windows and Citri...

Citrix Policy Reporter - RSOP CtxCseUtil Tool

CtxCseUtil.exe Created Date: October 24th, 2012 Version: 1.0 Description CtxCseUtil is a tool that can generate resultant set of policy RSOP report per computer, per user or both for Citrix policies on a device that has the Group Policy Management Console installed. Please note: You can download...

CVE-2018-5314 - Authentication Bypass Vulnerability in Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway

Description of Problem A vulnerability has been identified in the management interface of Citrix NetScaler Application Delivery Controller ADC and NetScaler Gateway that, if exploited, could allow an unauthenticated attacker with access to the NetScaler management interface to bypass authenticati...

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...

CVE-2016-4810 - Vulnerability in Citrix Studio Could Result in Insecure Access Policy Configuration

Description of Problem A vulnerability has been identified in Citrix Studio that could allow Access Policy rules to be set insecurely on the Citrix XenDesktop Delivery Controller. This vulnerability affects the following product versions: Citrix XenDesktop 7.x between versions 7.0 and 7.6...

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...

How to Configure StoreFront and Smart Card Authentication for Internal Users using Stores

This article describes how to configure Citrix StoreFront 2.0 and Smart Card authentication using Gemalto .NET cards against stores for internal users. Requirements The following components are needed to allow users connectthrough Smart Card to StoreFront: Citrix StoreFront 2.x Citrix Receiver fo...

Citrix ShareFile StorageZones Controller Multiple Security Updates

Description of Problem Two security issues have been identified within Citrix ShareFile StorageZones Controller that, if exploited, could allow a compromised or malicious ShareFile user to write arbitrary files as that Active Directory user to the local file system, and also to discover the full...

Authentication Bypass Vulnerability in the Management Interface of Citrix Application Delivery Controller and Citrix Gateway

Description of Problem A vulnerability has been identified in the management interface of Citrix Application Delivery Controller ADC formerly known as NetScaler ADC, and Citrix Gateway, formerly known as NetScaler Gateway, that, if exploited, could allow an attacker with access to the management...

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...

Citrix XenServer Multiple Security Updates

Description of Problem Two issues have been identified within Citrix XenServer, which could, if exploited, allow unprivileged code in a PV guest VM to cause the host to crash or become unresponsive. These vulnerabilities affect all currently supported versions of Citrix XenServer up to and...

CVE-2016-6493 - Memory Permission Weakness in Citrix XenApp and XenDesktop

Description of Problem A weakness has been identified in Citrix XenApp and XenDesktop. While this issue is not directly exploitable, it could potentially weaken an existing security mitigation, resulting in a loss of defence in depth. This weakness affects the following Citrix products: Citrix...

Hotfix XS82ECU1086 - For Citrix Hypervisor 8.2 Cumulative Update 1

Who Should Install This Hotfix? This is a hotfix for customers running Citrix Hypervisor 8.2 Cumulative Update 1 and is only available to customers on theCustomer Success Servicesprogram. All customers who are affected by the issues described inCTX693178 - Citrix Hypervisor Security Bulletinshoul...

XenServer - VMs on a Cisco USC host do not receive the DHCP settings

When running VMs on a XenServer 8.4 host running on Cisco UCS hardware, the VMs do not receive the DHCP settings...

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:...

"Connection timeout" error when launching Desktop sessions

Users are unable to connect to Desktop Sessions. All connections fail with status "Connection Timeout"...

"Error: Not a privileged user” after Citrix Gateway authentication passed

After users input their username and password on the NetScaler Gateway login page, the URL redirects to the StoreFront SF URL. However, the application list fails to display, and an error message stating "Error: Not a privileged user" appears...

Mastering Historical Throughput/Bandwidth data Using NetScaler Reporting feature

This article aims to provide a comprehensive guide on utilizing the reporting feature to effectively capture historical throughput data in NetScaler...

Citrix Hypervisor Security Update

Description of Problem Two issues have been identified in Citrix Hypervisor that may, if exploited, allow privileged code in an HVM guest VM to compromise or crash the host. These issues only apply in specific configurations; furthermore, Citrix believes that there would be significant difficulty...

Citrix Hypervisor Security Update

Description of Problem A number of vulnerabilities have been found in Citrix Hypervisor formerly Citrix XenServer that may: i. Allow the host to be compromised by privileged code in a PV guest VM, ii. allow unprivileged code in a HVM guest VM to cause that guest to crash and iii. under certain...

Citrix Security Acknowledgements

Citrix would like to thank security researchers who have worked with us to secure Citrix products and services. 2019 Vahagn Vardanian Mohammed Israil Nicholis du Toit Archit Garg of Careem Ismail Tasdelen Andrea Pessione of SKIT Cyber Security Armando Huesca of SKIT Cyber Security Asher Bin Khali...

CVE-2019-6485 - TLS Padding Oracle Vulnerability in Citrix Application Delivery Controller (ADC) and NetScaler Gateway

Description of Problem A vulnerability has been identified in the Citrix Application Delivery Controller ADC formally known as NetScaler ADC and NetScaler Gateway platforms using hardware acceleration that could allow an attacker to exploit the appliance to decrypt TLS traffic. This vulnerability...

CVE-2018-18517 - Cross-Site Scripting Vulnerability in Citrix NetScaler

Description of Problem A Cross-Site Scripting XSS vulnerability has been identified in Citrix NetScaler Gateway, formerly known as Citrix Access Gateway Enterprise Edition and Citrix ADC formerly known as NetScaler ADC, that if exploited by an attacker with access to the NetScaler administrative...

Citrix NetScaler Application Delivery Controller and NetScaler Gateway Multiple Security Updates

Description of Problem A number of vulnerabilities have been identified in supported versions of Citrix NetScaler Application Delivery Controller ADC and NetScaler Gateway. The following vulnerabilities have been addressed: CVE-2018-6810: Citrix NetScaler Application Delivery Controller ADC and...

Mac Workspace error "This store doesn't exist. Please retry or contact support"

After plugging-in Gateway URL on Mac Workspace and entering credentials, Workspace prompt error "This store doesn't exist. Please retry or contact support"...

How to set taskbar as auto-hide for all users in HTML5 Workspace App

HTML5 Workspace App taskbar configuration...

Unable to launch ICA session due to wfica32.exe signature validation failure

After upgrading Citrix Workspace App to 2203 CU2 and 2210.5 and above in customer's client machine, ICA session became unable to launch. Specifically, ICA file can be downloaded but wfica32.exe never starts. The issue doesn't occur in the same client machine with Citrix Workspace App for Windows...

Security Advisory for Citrix Hypervisor

Several security issues have been identified that affect Citrix Hypervisor: An issue has been identified that may allow privileged code in a PV guest VM to cause the host to crash. This issue has the following identifier: CVE-2022-23034 Note that PV guests are supported in Citrix XenServer 7.1 LT...

CVE-2017-5571 - Open Redirect Vulnerability in Citrix License Server for Windows and Citrix License Server VPX

Description of Problem An open redirect vulnerability has been identified in the Citrix License Server for Windows and the Citrix License Server VPX. This vulnerability could potentially be used to facilitate a phishing or social engineering attack. This vulnerability has been assigned the...

BGP Routing and RHI Functionality in NetScaler

This article provides information about BGP routing in NetScaler and some of the sample BGP configurations. It gives a brief overview of the RHI functionality. Route Health Injection RHI The primary purpose of dynamic routing in NetScaler is to communicate the state or health of VIPs to the...

UviProcessExcludes registry setting disappears after Citrix VDA upgrade

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

Citrix SD-WAN Center Security Updates

Description of Problem A command injection vulnerability has been identified in the management console of Citrix SD-WAN Center and NetScaler SD-WAN Center. This vulnerability could allow an unauthenticated attacker with access to the management console to compromise the host. A low severity...

How to Enable and Collect Logging for Citrix Workspace App (CWA) for Mac

This article is intended for Citrix administrators and technical teams only. Non-admin users must contact their company’s Help Desk/IT support team and can refer to CTX297149 for more information. Citrix Workspace App CWA for Maclogging This article provides an overview of logging features...

Event ID: 0 & Event ID:1 - Citrix Store cannot be created or added

Unable to create or add a store. Event ID: 0 & Event ID:1 Checking the event viewer on the Storefront server gives the following events- Also, unable to browse an existing store. "The webpage cannot be found."...

Citrix XenServer Multiple Security Updates

Description of Problem A number of security issues have been identified within Citrix XenServer. These issues could, if exploited, allow a malicious administrator of a PV guest VM to compromise the host. The issues have the identifiers: CVE-2017-8903 High: x86: 64bit PV guest breakout via pagetab...

Hotfix XS82ECU1085 - For Citrix Hypervisor 8.2 Cumulative Update 1

Who Should Install This Hotfix? This is a hotfix for customers running Citrix Hypervisor 8.2 Cumulative Update 1 and is only available to customers on theCustomer Success Servicesprogram. Note: Citrix Hypervisor 8.2 Cumulative Update 1 reaches end of life on Jun 25, 2025. Upgrade toXenServer...