Can't install App Layering Agent, "System.MissingMethodException"

The Citrix Agent install fails because the Agent won't start. Windows says there was a timeout waiting for the service, but in reality it immediately crashes with a .Net error in the Windows Application event log. Application Log events: Log Name: Application Source: Application Error Date:...

UPM Roaming Profiles "Break" if App Layering Elastic Layering is Enabled

UPM roaming profiles "break" if enabling App Layering Elastic Layering feature. Can’t right click the start menu, can’t open programs, etc...

FAQ: Login performance with Elastic Layers

Why are user logins with Elastic Layers enabled slower than normal logins on a non-EL image? Why are logins slower depending on how many Elastic Layer assignments a user has? Background: When you define an Image Template in the Layering Management Console LMC, you have to select the Elastic...

How to set the default size of the Elastic Layering writable volume

When Elastic Layering is enabled with or without User Layers, the boot disk is created with an extra 20GB as a second partition where the user writes will be stored. This is necessary to keep writes at a layer above the boot disk and any elastically assigned layers that might show up later. If yo...

How To Change the Unidesk(2.x and 3.x) / App Layering(4.x) appliance IP addresses

The IP address can be changed on Unidesk appliances and the App Layering ELM appliance through the administrator login...

Installing updates or third party software on the ELM

As a general rule, you should not install software on your ELM. While there are some circumstances where it will work fine, it is likely to cause software dependency problems that will block App Layering updates. App Layering is very particular about the Linux software packages and versions...

App Layering / Unidesk - Finding the KMS server

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Using SNMP with App Layering and Unidesk appliances

A number of customers want to have some kind of external monitoring system for our appliances. SNMP is a fine choice, except that we do not enable it by default on our appliances, and we do not have a custom MIB. However, the SNMP daemon is installed, so if the customer knows what they're doing,...

Elastic Layering Logs

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Space not freed up after force-canceling a task

When editing a layer or publishing an image, you see extra space consumed in the "Layering Service" Local Storage normally. You attempt to cancel the operation, but the task does not cancel. Eventually after 60 minutes the cancel operation gets to the Stalled state, allowing you to force-cancel t...

After I upgrade Windows 10 on my OS layer, what do I do about the C:\Windows.old folder?

When you upgrade Windows 10 from one major version to another 1703 to 1709, for instance, the previous Windows installation is left in a C:\Windows.old folder. In App Layering, you must not delete this folder. Our software needs to copy our drivers and other files from Windows.old to Windows once...

App Layering: Failed to Reattach Disks to the Desktop that were Temporarily Attached to the CachePoint Appliance

The error appears when rebuilding a desktop...

PVS image published from App Layering gives a BSOD with inaccessible boot device error

When booting an image in PVS that was published via App Layering, you may receive a BSOD with theINACCESSIBLE BOOT DEVICE error...

App Layering - PVS Blue Screen SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (CVhdMp.sys)

The BSOD SYSTEMTHREADEXCEPTIONNOTHANDLED CVhdMp.sys is seen when booting up a VM in PVS using an App Layering image. It is also possible to just simply get a BSOD with a Stop Code of 0x0000007B. However, this is fairly generic. If you see this stop code and "ERROR: BNIStack failed, network stack...

Moving from Unidesk to Citrix App Layering

Although they are based on the same layering technology, Unidesk version 2 and 3 are very different from Citrix App Layering formerly Unidesk version 4. This document lays out the major product differences for exiting version 2 and 3 customers to help them understand those differences and plan fo...

App Layering 4.X - how to change ELM appliance administrator password

App Layering 4.X - how to change ELM appliance administrator password...

Can't import Gold VM into App Layering, it says "The virtual machine template cannot have any attached disks."

You are trying to import a new Gold VM to be an OS layer. The first thing you need to do is create a Connector. In the Connector, you see the field for Template, and you try to select your Gold VM there. When you test it, it fails saying one of these: "The virtual machine template cannot have any...

Failed to Publish Image to PVS server, Unidesk Agent error: "The specified service does not exist"

When publishing a Citrix App Layering image to PVS, you might get an error like this - Error: The operation being requested was not performed because the user has not logged on to the network. The specified service does not exist. You may also see 'Access is Denied'. This is recorded in the Unide...

App Layering - Best Practice for Printing

Best practice and guideline for printing in 2.x and 3.x. Create a printer layer for your printers for ease of updating and troubleshooting any problems Layering of printer drivers is recommended Use inbox drivers vs. 3rd party drivers Create a GPO or logon script to define a default layer...

App Layering: Benign messages in the ELM conosle

There are a number of messages that normally appear on the ELM VM console that are in fact benign and not an indication of any problem. These are messages that Linux outputs internally and not errors or problems reported by the App Layering software. These are normal messages that are produced...