8/24/2017 0 Comments Citrix Ica Client VistaThe path is not of a legal form in Citrix Receiver. I have been getting this error in Receiver 4. It seems to occur when you upgrade or reinstall Receiver. The fix is to rebuild your profile but I have have a more targeted fix which I have outlined below: 1. Close down Receiver. Terminate the process wfcrun. Task Manager. The process may restart itself and require terminating for a second time. Delete %APPDATA%ICA Client. Log off and back on again the problem should be resolved. The ultimate Citrix Xen. Desktop 7. x internals cheat sheet! Nessus Plugins Windows. Adobe Flash Player = 25.0.0.171 Multiple Vulnerabilities (APSB17-17)IBM Spectrum Protect / Tivoli Storage Manager Installed. Ever wondered what happens after a user fills in his or her username and password? What the difference is between internal and external user authentication, resource enumeration and the accompanying launch process? Or what about Web- Interface and Store. Front, do they both have the same authentication mechanism? What are the differences between the server and desktop VDA’s? What about the VDA and Xen. Desktop internals, what happens inside a VDA when a resource is launched? ![]() ![]() ![]() How does a connection get brokered? Read about this and more during the next 8 (mini) chapters. Note: the next paragraph is not (supposed to be) new information, if it is, you are in serious trouble! My suggestion? But you’ll do that anyway, right? Make sure to check out my book: Inside Citrix – The Flex. Cast Management Architecture! It includes information from this blogpost and a (whole) lot more! Click here. Obvious, but still. In fact, I guess it’s safe to state that, that goes for all problems in life, if you don’t know or understand the basics of what you are dealing with than you’re bound to get lost, fast. Throughout this guide I’d like to zoom in on the FMA, some of its main components and talk about what happens during some of the most common day- to- day operations and processes, so common that in most cases we don’t even think about what’s going on under the hood until. However, I still feel that I’ll be able to provide you with some new insights on some of the topics covered. Also, and even if it’s only for me, I think it’s nice to have all related information in one place and not scattered over multiple blog posts, which might be considered bad marketing by some, I know : -)I’ll provide what I prefer to find. Whenever I am on the lookout for new information, whether it is for troubleshooting purposes or just to learn something new, I always hope to find two things. So that’s what I tried to achieve here as well, hopefully you’ll find it detailed (and well written) enough, and next to this blog post I also included the option to download the information in . PDF format. Make sure to check out one of my previous articles as well: Troubleshooting Citrix Xen. Desktop & Xen. App 7. x? If you find any typo’s, and I’m absolutely positive that you will, just ignore them! Navigation: VDA Virtual Machine Hardware; Windows Configuration; Install Virtual Delivery Agent 7.6.300. Virtual Delivery Agent 7.6.300 Hotfixes; Broker Agent 7.6.300. Support site offering resources for Citrix Presentation Server, VDI, VMWare, Xen, Microsoft Terminal Services, SoftGrid and others. Let’s take it one step at a time. I’ll try and break it down phase by phase, starting with a brief FMA overview, followed by the user authentication/enumeration process and take it from there. Below you’ll find what I want to cover during some of the next (mini) chapters. It goes without saying that what applies to Xen. ![]() Desktop applies to Xen. App as well since they are both part of the same Flexcast Management Architecture. File names: ica32pkg.msi, ica32web.msi, icaweb.cab: For: Citrix Presentation Server Client for Windows: Replaces: 10.150, 10.152, 10.153. Download Citrix Receiver product software, SDKs, sources, betas and tech previews. End users looking for any type of client software should start here. Compact overview on the main components that make up the FMA. Internal & external (Net. Scaler Gateway) user authentication steps. The application, or resource, enumeration process. What happens when a resource, desktop or application, is launched. More specific, what happens inside the VDA during launch time. ICA protocol stack breakdown, not really me taking but still. A look at the main services that make up Xen. Desktop, or FMA if you will. Some key takeaways! FMA high- level overview Just as a pre- appetizer, let’s have a look at some of the main components that make up the Flexcast Management Architecture (FMA) today and, from a bird’s eye view, how they interact and rely on each other before we get into some more detail on this. Citrix ICA Client 10.00.603 is a communication tool which can help users access any Windows-based application running on the server. All the user needs is a low. If you wonder how many users are connecting to Citrix server, you could check it out by running Windows Task Manager of Citrix server (from XenApp Plugin client). Receiver. We’ll start with Receiver; it’s installed on the end user device and communicates with Net. Scaler, Store. Front and the virtual and/or physical machines in the data center over port 8. This can either be a VDI or HSD orientated architecture. It talks to Store. Front using the Store. Front Service API, again using ports 8. This API is primarily responsible for operations like, user authentication, enumeration, reconnecting, disconnecting, launching applications and desktops, power control and more. There is also a so- called Store. Front Web API a. k. Receiver for HTML 5, it provides access to applications and desktops using just a HTML 5 capable web browser, no locally installed Receiver is needed. Both API’s act as a bridge between the Store. Front services, with the authentication service and the store service being the most important ones. Store. Front. Within a Xen. Desktop Site you basically have two points of authentication, one of which is Store. Front and the other being the Net. Scaler Gateway. Store. Front communicates with Receiver, the Delivery Controllers and Net. Scaler (STA) with regards to external access. Optionally it can also be configured to communicate with App. Controller as part of a Xen. Mobile deployment, VDI- in- a- Box is also an option. It plays an important role in the application enumeration and resource launch (. ICA file) process and it functions as the main Store (there can be multiple) from which users subscribe to their desktops and applications. Net. Scaler gateway. As mentioned above the Net. Scaler Gateway is primarily used (yes, it can do a lot more, out of scope for now) to provide our users with secure external access to our Xen. Desktop sites. As we will see shortly there are some key differences when it comes to external and internal user authentication and the resource enumeration process. So in that respect you could say that it is part of the FMA. Delivery Controller. Next up is the Delivery Controller; this is the real workhorse and centerpiece of the FMA. It brokers (VDA) sessions, verifies user credentials in AD when combined with Store. Front (note that I say verify and not authenticate, there is a difference between the two) and as such plays an important role during login and resource enumeration. It handles communications with Store. Front and/or Web Interface (XML), the underlying Host (Hypervisor) infrastructure, the central Site database and it also takes care of load balancing HSD connections, and as of version 7. Connection Leasing! You could say that the Delivery Controller is in fact the Xen. Desktop/Xen. App installation. It houses all critical services, which in their turn control all major FMA components. More details in a bit. Virtual Desktop Agent. The Virtual Desktop Agent, or VDA in sort, is a piece of software that gets installed on all virtual and physical machines running a Windows Server and/or Desktop operating system in your Xen. Desktop Site (Citrix recently released a VDA for Linux as well) making their resources remotely available to users. The installed VDA software communicates with the Delivery Controller as well as with the Receiver software installed on the client endpoint. When the connection is local (LAN) the VDA and Receiver will set up a direct (one to one) connection, if the connection is external, through Net. Scaler, traffic will flow from the internal network through Net. Scaler (SSL 4. 43) on to the external client device. Or, if the client endpoint does not have Receiver installed it will, or can, use the Store. Front HTML5 based build- in Receiver instead. The earlier mentioned one to one connection will then run from the users browser (needs to be HTML 5 capable) to the virtual machine in the data center. It will of course traverse the Net. Scaler Gateway when the connection is external. Host Infrastructure. The Host infrastructure is nothing more than you underlying Hypervisor hosting you virtual Xen. Desktop (VDI) and/or Xen. App (HSD) machines. This can be Xen. Server, Hyper- V or VMware v. Sphere (ESXi). The host connection is configured in Studio and basically connects your Delivery Controllers to the Hypervisor, linking them together. From there on the Delivery Controller(s) will constantly communicate with the Host Infrastructure and tell it what to do: start up a VM for example, tell a VM that a new connection is coming, create new machines using MCS, log all configuration and/or machine connection state changes, monitor the infrastructure etc. This is where all information, dynamic and static, is stored. It holds all Site configuration information with regards to (HDX) Polices, Delivery Groups, Machine Catalogs etc. It’s also responsible for storing all dynamic session information and as such it has a constant connection with the Deliver Controller(s). It needs to know everything that’s going on. If a Delivery Controller needs to broker a new session or reconnect an old one, this is where he (is it a he?) gets his information. As mentioned version, 7. Connection Leasing (see the link earlier), if for whatever reason the central Site database becomes unreachable, never mind if it’s HA or not, users will still be able to login and use all their resources that they have accessed at least once during the past two weeks (default setting) as of that moment. Citrix Studio. Citrix Studio, the main management console from where you configure and manage the biggest part of your Xen. Desktop Site deployment. Although there are several options and/or features that you can only configure using Power. Shell, Studio has a build- in Power. Shell prompt as well. However, if you use PVS for example, that’s still a separate management console, the same applies to Director and Store. Front. The latter can be added to Studio as well but is only partly manageable. Net. Scaler is also separate, but then again, it isn’t really part of the FMA, I guess it all depends on your point of view. Citrix Director. I already briefly mentioned Director in the previous paragraph, it is Citrix’s first line of defence monitoring and troubleshooting tool. It comes shipped with Xen. Desktop/Xen. App. As of Xen. Desktop 7. Edge. Sight functionality build- in and if you own the proper licenses (Xen. Desktop and Net. Scaler) you can monitor your Net. Scalers (HDX insight) using the same console as well, again, based on Edge. Sight technology. It offers some really nice overviews and statistics.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
March 2018
Categories |