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Attempting to add NetScaler device to Citrix Command Center fails with: “Discovery failed for | Error: Unable to Ping using SNMP after enabling SNMP”

June 15, 2016

Problem You’ve just completed deploying Citrix Command Center 5.2 45.4 and attempt to add your NetScaler pair to the device list but the process fails with the following error: Discovery failed for <NSIP> Error: Unable to Ping using SNMP after enabling SNMP Solution One of

Securing Citrix NetScaler VPX to score A+ rating on SSL Labs

June 9, 2016

I’ve received quite a few requests from clients over the past few months requesting to secure their NetScaler published services to score an A+ on Qualys SSL Labs: https://www.ssllabs.com/ssltest/ I’m a bit late to writing this blog post as there are plenty of other excellent

Launching XenApp 7.6 desktop published through NetScaler appliance throws the error: “The connection to “” failed with status (Unknown client error 1110).”

May 18, 2016

Problem You attempt to launch a XenApp 7.6 desktop published through NetScaler appliance: … but notices that you are presented with the following error message: The connection to “<YourXenAppGroup>” failed with status (Unknown client error 1110). Solution One of the common reasons why this error

Importing PFX certificate from Microsoft Windows Server into Citrix NetScaler VPX

May 10, 2016

One of the most common Citrix NetScaler questions I’ve been asked by colleagues and clients is how to import a PFX certificate from a Microsoft Windows Server into Citrix NetScaler and while there is a KB from Citrix demonstrating this process via the GUI: How

Using Citrix NetScaler Rewrite Action and Policy to prevent the Location HTTP header from exposing internal IP addresses

May 5, 2016

I was recently asked by a client to fix an issue with their Exchange 2013 Outlook Web Access webpage where an HTTP request to the site would expose the internal IP address of the Client Access Server in the Location HTTP header as shown in

Launching XenApp 7.8 application published through NetScaler 11 fails and throws the erorr: “Cannot connect to the Citrix XenApp server.Socket operation on non-socket”

April 1, 2016

Problem You have successfully published applications on a XenApp 7.8 application server through a NetScaler but noticed that while you are able to log into the portal and view the published applications, you receive the following error when an application is launched: Unable to launch

Citrix NetScaler VPX appliance fails to boot with the error: “can’t load ‘kernel’”

March 28, 2016

Problem You’ve recently upgraded a NetScaler VPX appliance to version 11.0.63.16.nc and have been running the upgrade for a few months but noticed that the appliance fails to boot into the kernel after a restart halting at the following: FreeBSD/x86 bootstrap loader, Revision NS1.2 Loading

Unable to launch Citrix XenDesktop 7.8 virtual desktop published through a NetScaler gateway

March 27, 2016

Problem You completed deploying a new XenDesktop virtual desktop catalog, publishing it through a StoreFront, then providing access to the StoreFront through a NetScaler gateway: Clicking on the desktop icon opens the window while the Delivery Controller attempts to launch and broker the session through

Creating a Citrix NetScaler High Availability pair without wiping out an existing configuration

February 10, 2016

Problem I’ve received quite a few calls over the past year from clients and colleagues about situations where they had an existing single node NetScaler appliance deployed and decided to create an HA pair at a later time but noticed that adding a new NetScaler

Configuring Load Balanced LDAPS Load Balancing Virtual Server on NetScaler version 11

February 6, 2016

I recently had to configure a Load Balanced LDAPS Load Balancing Virtual Server on a NetScaler version 11 for a client and since the procedure is slightly different than earlier versions, I took the time to document the steps so I can write this post

Hello! My name is Terence Luk and welcome to my blog.

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Attempting to add NetScaler device to Citrix Command Center fails with: “Discovery failed for | Error: Unable to Ping using SNMP after enabling SNMP”

Securing Citrix NetScaler VPX to score A+ rating on SSL Labs

Launching XenApp 7.6 desktop published through NetScaler appliance throws the error: “The connection to “” failed with status (Unknown client error 1110).”

Importing PFX certificate from Microsoft Windows Server into Citrix NetScaler VPX

Using Citrix NetScaler Rewrite Action and Policy to prevent the Location HTTP header from exposing internal IP addresses

Launching XenApp 7.8 application published through NetScaler 11 fails and throws the erorr: “Cannot connect to the Citrix XenApp server.Socket operation on non-socket”

Citrix NetScaler VPX appliance fails to boot with the error: “can’t load ‘kernel’”

Unable to launch Citrix XenDesktop 7.8 virtual desktop published through a NetScaler gateway

Creating a Citrix NetScaler High Availability pair without wiping out an existing configuration

Configuring Load Balanced LDAPS Load Balancing Virtual Server on NetScaler version 11

Hello! My name is Terence Luk and welcome to my blog.

Follow me:

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Subscribe to the mailing list to receive posts updates!

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