Microsoft Security Update Validation Report May 2025

Microsoft’s May 2025 security updates have passed Citrix testing the updates are listed below. The testing is not all-inclusive; all tests are executed against English only environments and issues may still be found upon implementation. Follow best practices for testing and installing software...

Graphical Issues with Citrix Workspace App 2503 and Intel GPUs

Customers using the Citrix Workspace App for Windows version 2503 or later on Windows endpoint devices, like the Microsoft Surface Pro laptops equipped with specific Intel GPUs using older Intel drivers, may encounter graphical anomalies. These issues can manifest as visual artefacts or black box...

Update NetScaler Console certificate

NetScaler Console allows you to replace the default inbuilt database certificates with your own certificates from a trusted certificate authority. You can also configure your own cipher suites in the NetScaler Console database. This feature provides greater flexibility and security for your...

[NetScaler-AAA] The Radius action cannot be performed in nFactor auth

In nFactor auth, the Radius action is the second factor but cannot be performed. nFactor flow is simple and is like below: AAA vServer: DomainRadiusvS Login Schema: DualAuthSchema Authn Policy: DomainLDAPPol Expression: true Action: LDAPAct Next Factor if Success: RadiusPollable Login Schema:...

NetScaler Reset with Code 9222

Users report being unable to access a specific application. Investigation reveals that the NetScaler is resetting the packet with Reset Code 9222 when the server responds to the client’s request...

DaaS - Client IP detection for Network Location Service

How is actual Client IP determined for Network location detection, when traffic from both internal and external Clients is routed through a Proxy? This is important when Clients access the Cloud Workspace through a Proxy, irrespective of Client's location - inside or outside corporate network...

Citrix NetScaler Automated backup job is failing after recent upgrade.

After upgrading to NetScaler firmware 13.1.56.x or later , attempts to download backup files using the Nitro API may fail. Customers using automation tools such as Ansible , Postman , or custom scripts may receive the following error when downloading files through the systemfile endpoint: Main...

Citrix Virtual Desktop - Username show "-" in the Citrix Studio after launching Server Desktop

After user session Launched, the "current username" in Citrix Studio shows "-"...

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"...

NetScaler shows an error stating "String length exceeds maximum [passplain, 31]"

When trying to update an existing certificate file with a new certificate file, upon clicking 'Ok', you see the following error appear: "String length exceeds maximum passplain, 31" The attempt to save the changes made fail because of the error which appears...

CWA 2503 for MAC - Error “There is no Citrix SSL server configured on the specified address

Issue with a users who is unable to launch applications from Citrix Workspace for Mac. When trying to launch an application, the following error is displayed: “Failed to start. There is no Citrix SSL server configured on the specified address.” Issue only occurring for CWA Mac...

uberAgent metrics for User Input Delay are not visible on Windows Server 2016

When utilizing uberAgent on Windows Server 2016, no metrics are received for User Input Delay...

2402 LTSR target device stuck initializing while checking the status of Hybrid joined machines

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Master image not visible while creating or updating MCS catalog

While creating a new catalog or updating an existing catalog, new Master image created on the vSphere hosting is not visible...

Citrix Endpoint Management (aka XenMobile Server) 10.15.0 Rolling Patch 11

Package name: xms10.15.0.11117.bin For: XenMobile Server 10.15.0 Deployment type: On-premises only Replaces: xms10.15.0.11009.bin,xms10.15.0.10915.bin, xms10.15.0.10808.bin, xms10.15.0.10731.bin, xms10.15.0.10624.bin, xms10.15.0.10517.bin, xms10.15.0.10417.bin, xms10.15.0.10327.bin,...

XenServer and Citrix Hypervisor Security Update for CVE-2024-28956

Description of Problem Intel has disclosed a security issue affecting Intel CPUs. This CPU hardware issue may allow privileged code in a guest VM to infer some memory content of another VM that is running on the same CPU core. Although this is not a vulnerability in the XenServer or Citrix...

Power actions are pending and never be executed

Customer's power actions are pending and never be executed...

Citrix Virtual Apps - Mouse pointer looks big inside published application

Administrators might notice that in a multimonitor setup where the main screen is set to 200% scaling and the secondary screen to 100% scaling, when the published application is moved from the 100% scaled monitor to the 200% scaled monitor, the Mouse pointer size becomes bigger as expected both...

Not able to provision Adaptive Auth appliances

Adaptive Auth provision failed with error: Deployment provision failed...

NetScaler Appending random strings in http POST method causing "500 Internal Error"

The NetScaler appends some random string to POST request sent to the backend server, This results in failure, “HTTP 500 Internal error” to be specific...

Invalid login error is show when FAS is enabled on Rocky Linux 9.2

You deploy Rocky Linux 9.x FAS is configured and works fine on other OS like Windows, Ubuntu Issue is seen only with RHEL 9.x or Rocky Linux 9.x Invalid login prompt is thrown. Preauthentication errors are noticed in ctxkrb debug tool when installed for debug purposes on the Linux VDA...

GUI Issue - Unbinding the LogAction from Rewrite policy fails from GUI but works from Cli

Re-Write Policy is configured with a Log Action bound to it. When the Log Action is removed from the policy via the GUI, the policy is not actually removed. After hitting 'OK', there's no error, and the Log Action is still bound when checked again...

Host ID shows the same on the all the MPX 9100

Host ID shows the same on the all the MPX 9100...

Fresh User layers hang/freeze on first logon

When logging on with a fresh profile/ user layer, the UL is created but logon process comes to a halt at a black screen force log off and log back fix the issue, the session is established and user desktop is shown...

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...

Citrix Virtual Apps and Desktops - Citrix.Monitor.exe memory leak

Citrix.Monitor.exe is gradually taking up ram memory on the Delivery Controller. Number of threads increases every day 200+. Memory usage is very high 1GB+. Process memory dump shows a lot of threads with ‘SendMessagesToPendo’ on the call stack...

Remove the Send anonymous usage statistics options at preferences at Storefront

To remove the option of sending anonymous usage statistics to improve Citrix Workspace app at preferences for Stores...

Unable to take control during a Teams session with a Linux Workspace

Unable to take control during a Teams session with a Linux Workspace...

Citrix Provisioning - Configuration Wizard fails after upgrade to 2503

PVS Configuration Wizard fails with errors after PVS upgrade to version 2503. ConfigWizard.log located in C:\ProgramData\Citrix\Provisioning Services\Log on the PVS Server shows: ERROR:SqlException caught, Number = 207, Message = Invalid column name 'isXsProxyConfigRequired'. Updating server...

Kerberos KNOB stopped working

The KNOB “nsapimgr -ys arg1=1 -ys call=nsenablepreferredkrbetype” no longer works after upgrading from 13.1 to 14.1...

Driver Disk for Emulex lpfc 14.4.393.31 - For XenServer 8.4

Who should install this driver disk? Customers running the XenServer 8.4 release who use Emulex's lpfc driver and wish to use the latest version of the following: Driver Module| Driver Type| Version ---|---|--- lpfc| Fibre Channel HBA/Storage Controller| 14.4.393.31 Required firmware versions The...

Azure deployed machines fail to Power On due to Data Collection Rule Associations

When applying a Machine Profile to an Azure-based Machine Creation Services catalog, attempting to Start machines may result in one of the following errors: "code":"UnsupportedFeature","message":"Data Collection Rule Associations is not supported in the location of the targeted parent resource...

Webex App for VDI not optimized

Webex App for VDI is working with fallback mode, instead of VDI-optimized mode...

BlobTierInadequateForContentLength during Machine Catalog Update

The following error is seen while updating a MCS Machine Catalog after resizing the size of the Master VM disk. Exception: StudioErrorId : ProvisioningTaskError ErrorCategory : NotSpecified TaskState : FailedToCreateImagePreparationVm TaskStateInformation : Terminated ErrorId :...

Citrix Profile Management: Temporary Profile Loading and Profile details not visible in Director

Temporary Profile Loading and Profile details not visible in Director...

Enabling Core Dump Collection with ABRT on RHEL/CentOS

This KB outlines the steps to enable core dump collection for Linux VDA modulesctxgfx etc using the ABRT Automatic Bug Reporting Tool framework on RHEL/CentOS systems...

Intermittent authentication failures with Oauth

User unable to authenticate due to token validation failure. Error in logs: "OAUTH: verify JWT: Could not find key for 'kid' in configuration, cannot verify jwt"...

PVS boot fails for Server 2025 based PVS vdisks running on Azure and Hyperv after windows update

When applying windows updates to a PVS vdisk with Server 2025 which is running on Azure or Hyper-V, after rebooting to finish installing windows updates, PVS boot fails. Issue when applying windows updates to a PVS Streamed server 2025 vdisk: 1. The vdisk is booted in read/write mode 2. Windows...

After installing Single-session OS VDA, Windows Hello for Business cannot be disabled via Intune.

After installing Single-session OS VDA 2209 or 2203 LTSR CU2 or later, Windows Hello for Business can no longer be disabled via Microsoft Intune...

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...

How to create a PVS master target device on Hyper-V for Windows 11

The objective here is to creating a PVS master target device VM on Hyper-V, which can be used for both installing Windows 11 and also booting via PVS. Windows 11 has installation requirements which need both Secure boot and TPM available. Hyper-V VM options which are relevant here: Secure boot...

Citrix Studio error "A working machine creation service could not be found"

While accessing the studio we are having the following error "A working machine creation service could not be found "...

Citrix Daas - CVAD - How to Migrate vCenter 7.x to 8.x Without Losing Citrix Configurations

This article provides a step-by-step guide on how to migrate vCenter 7.x to a new vCenter 8.x environment without losing Citrix configurations, ensuring a seamless transition and minimizing downtime, while maintaining the integrity of existing virtual infrastructure and Citrix settings...

Screen sharing doesn't work with QuickAssist or other apps when AppProtection is enabled

How to proper configure AppProtection for screen capture...

Black artifacts on published apps once they resize the window or plugout -plug in external monitors

Black artifacts appear within published applications...

LVDA is getting unregistered after the upgrade to 2402 LTSR

Unable to launch the Linux Published desktop with below error VDA is going to unregister state based on the VDA side logs and CTXVDA service is not starting...

Domain passthrough with ZeroTrust VPN users get "cannot start your session" via Azure load balancer

When you access Store URL and click on "Log on" you see the error - cannot start your session. wait a few minutes and try to logon again. If you still experience problems, contact your help desk. When you click on the "OK" button multiple times, eventually it goes away. More details on deployment...

WEM External task not working when "run script " selected

External task configured using below option for "run script" In the WEM logs we could see below error 12:14:13 PM Warning - VuemExternalTaskExecutor.ExecuteExternalTask : External Task - Create User Cache Folder Id:3 - Unable to validate target file existence... 12:14:13 PM Exception -...

Understanding Zero Touch Certificate Management (ZTCM) in Citrix NetScaler

Summary: This article addresses frequently asked questions regarding the behavior of Zero Touch Certificate Management ZTCM in Citrix NetScaler, including how it handles certificate synchronization, SNI-based certificate selection, and coexistence with legacy configurations...

CWA Mac 2503: Launch Failure “no Citrix SSL server configured on the specified address”

Users who are on Citrix Workspace app for Mac 2503, attempting to launch Citrix sessions, may encounter a failure. The following error message is displayed to the end user: “No Citrix SSL Server configured on the specified address." as below...