When I tried to connect to the administrative file share C$ on my wife’s computer I got the error A device attached to the system is not functioning. The other way round worked without a hitch, i.e. I could access my laptop’s C$ share from my wife’s computer. When I tried to connect to her […]
This article is part of Helge’s Profile Toolkit, a set of posts explaining the knowledge and tools required to tame Windows user profiles. As you may be aware Citrix Profile Management (aka UPM) automatically migrates existing roaming or local user profiles to its user store. A very nice feature, certainly, but what about the way […]
If you have ever been to a conference with a Splunk booth you will have noticed their t-shirts. They are all black with a cool slogan printed in white. When you have been working with Splunk for some time you will notice that it has a very powerful commandline tool, splunk.exe. You can use that […]
I am sure you all love XenDesktop VDAs that just won’t register. Although this is becoming less and less of a problem I had another case recently.
PowerCfg is a nifty little tool for analyzing and configuring all kinds of things related to battery usage and power plans. In Windows 8.1 PowerCfg learned how to analyze the effectiveness of connected standby, a new low-power mode introduced in Windows 8 that enables applications to stay connected while the device (mostly) sleeps. All the […]
The most obscure effects often have the simplest explanations – once you know where to go looking for them. Luckily uberAgent tells you exactly what is going on.
I am an infrastructure guy (by heart – and a developer by nature). As such, topics like maintaining my own webserver (which I don’t – yet) or configuring backup deeply fascinate me. I am also mildly paranoid with regards to the safety and, especially as of late, the privacy of my data. That makes finding […]
This is what I have been doing for the past few days: draining the battery of my new Dell Venue Pro 11, a Windows 8.1 tablet (the real deal, not RT). I wanted to find out how good Windows has become at battery-efficient video playback and how that is affected by GPU acceleration.
Splunk has a very extensive REST API – which is just a fancy way of saying that many of its capabilities are accessible via standard HTTP(S) requests. While much of the API is well documented, submitting data from C# to Splunk is kept a bit vague. Since I had to do that recently in order […]
When you have a cloud-based file sharing service it makes a lot of sense to synchronize part or all of the data with your desktop computer. Citrix ShareFile offers the Sync for Windows tool for that purpose. However, once you open its configuration screen you notice that has a severe restriction: it can only synchronize […]
With the advent of BYO it has become fashionable to regard PCs as untrusted devices that should be isolated in a dedicated security zone.
This is the third article in a multi-part series about building and maintaining an inexpensive scalable platform for VDI in enterprise environments. Previously in this Series In the last article I explained that shared storage should be avoided, for two reasons: it is (very) expensive, and you, the VDI guy, are not in control. The […]
This is the second article in a multi-part series about building and maintaining an inexpensive scalable platform for VDI in enterprise environments. Previously in this Series I started this series by defining requirements. Without proper requirements, everything else is moot. Remember that we are looking at running typical enterprise desktop workloads, we are trying to […]
Application startup duration is an essential component of user experience. If you want to make sure that UX on your Windows machines is acceptable you need to monitor the time it takes for applications to start up. That, however, is not exactly easy – without uberAgent for Splunk.
This is the first article in a multi-part series about building and maintaining an inexpensive scalable platform for VDI in enterprise environments. Requirements Before we can even start to think about a possible architecture, we need requirements. Only requirements enable us to make choices that benefit the customer. Without proper requirements we are not building […]
It sometimes happens when I reply to an e-mail from somebody who is asking about my products that the receiving mail server rejects my message with the code “554 rejected due to spam content”.
In five minutes from now you will know how uberAgent for Splunk helps you better understand your terminal server farm. It gives you all the information you need for optimizing logons, sizing your servers and monitoring application usage. In other words: it tells you what is going on. See for yourself!
When you use XenDesktop the only way it makes sense you may find that Citrix has not really put much effort into making that a smooth experience.
Processing several terabytes of data per day is not too uncommon and easily possible with Splunk – that is one of the many things I learned at .conf 2013 in Las Vegas.
This is a collection of answers to questions around Atlantis Ilio you are likely to have when using the appliance in production.
Whether user profiles are loading slowly or group policy processing is taking too long – uberAgent for Splunk tells you exactly what is causing slow logons. uberAgent always supported a broad range of platforms, from physical PCs through virtual desktops to Citrix XenApp. Today we add RES Workspace Manager to that list!
This article is part of Helge’s Profile Toolkit, a set of posts explaining the knowledge and tools required to tame Windows user profiles. Many errors related to user profiles result in the user getting a temporary profile instead of the regular local or roaming profile. I have written about possible causes for that here. In […]
Cleanly shutting down all virtual machines on a given set of hosts is not as trivial as it might seem – especially if you want to be able to restore the original state once the planned maintenance you are doing this for is completed.
I have been using Windows 8 Client Hyper-V for a while now and must say it works like a treat – except for one thing: it is practically impossible to give VMs at the same time NATted internet access and connect them to other VMs and to the host. Windows Internet Connection Sharing (ICS) just […]
I had to troubleshoot a case where it suddenly was not possible any more to connect via ICA/HDX to freshly installed Windows 7 VDI machines. As it turned out, the root cause was a combination of Microsoft disabling legacy technologies and Citrix relying on them.
Analysing slow boots is a difficult task. You need to install software like XPerf and master its far-from-intuitive command line options to generate a trace file that you can then analyse. Once you find a possible cause for the long startup duration you never know if it is specific to the machine you analyzed or […]
I just had a situation where I was facing an empty desktop with no way to logoff, start a program or do anything else. The only thing left to do was to log the session off from an admin session. This got me thinking: how many ways are there to create such a situation? I […]
There are situations when you have VMs on disk, but vCenter does not know about them – i.e. they are not in the inventory. While it is fairly easy to add a single machine to the inventory, doing so for dozens or hundreds or VMs is too tedious to do manually. This script automates the […]
Do you know the maximum number of users each of your terminal servers can host with acceptable performance? You may have found out the hard way how many are too many – but how many are just right? Farm sizing and server capacity planning are typical tasks for consultants who often have a hard time […]
When you move users from a physical PC to a VDI environment you may find that they are not too happy with their new machine’s performance – it happened to me. To quantify things I took a series of measurements comparing the old PCs we migrated away from with both VDI machines and the new […]