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By Shawn Bass on
Friday, July 17, 2009 7:18:29 PM
After having just migrated a customer from Web Interface 3.0 + Secure Gateway 2.0 to Web Interface 5.1 / Secure Gateway 3.1.1 I had the unfortunate pleasure of finding a memory leak in Secure Gateway 3.1.1. After some period of time (hours/days depending on how busy your SG environment is) the private bytes in use by the Secure Gateway service climbs to a point where it stops functioning. When this happens you're down. What's worse is that if you're using traditional port monitoring on a hardware load balancer, the SG Service still listens on 443 so your load balancer won't direct users away from the non-functional Secure Gateway host. About three days ago Citrix pulled the Secure Gateway 3.1.1 download as visible on CTX121012 However that doesn't help me much since my customer was turned up a few days prior to it being pulled UGH!. Anyway, I'm now in the process of uninstalling SG 3.1.1 and installing 3.1 in it's place (which sucks because 3.1 has a security vulnerability). Hopefully Citrix will put out a fixed 3.1.1 release and more importantly hopefully they start communicating these types of things through their blog, etc.
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By Shawn Bass on
Thursday, July 16, 2009 10:44:30 PM
Over the course of the last few years, I taught an Advanced Citrix training class that was originally developed by Brian Madden. Over those few years, I took the material and updated it, rewrote large parts of it and made it my own. At the same time, Dr. Benny Tritsch began contributing to the material and was teaching the class in Europe. After BrianMadden.com was acquired by TechTarget, Brian (and myself and Benny Tritsch) effectively halted those training classes. This is why the Training URL on Brian's site says "We're working on our 2009 schedule". Anyway, I've arranged a relationship with a training facility and I intend on giving the training class anywhere from 2-4 times per year (no need to become a career trainer - there's plenty of those out there now). If you're looking for a training class to really learn how Citrix works, then this is the class for you. We don't do any of those pointless labs that are in most training cirriculum....
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By Shawn Bass on
Thursday, July 02, 2009 10:35:17 AM
So I've got a client that I've been rolling out HRP04 for XenApp 4.5 in order to resolve a nasty conflict between Microsoft App-V and Citrix's Client Drive provider cdm.sys that results in BSODs in certain circumstances when users of App-V applications try to perform I/O to their client drives. The system BSODs with a Stop 8E. I've been cautious about rolling out HRP04 because we've found re-introduction of some multimonitor glitches that were quite stable with HRP02 (as long as Post-HRP02 3040/3044 wasn't deployed - can't remember which of those two the seamless problem came from). Anyway, I've got HRP04 rolled out to about 80% of the farm, but we have one app that was bombing in Seamless mode because the application didn't think that the session had an 800x600 sized display. What's strange about this issue is that I ran...
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