How to isolate mutexes, events and semaphores (MutexIsolation)

09/10/2018 Stuart Moore

In order for some desktop applications to run securely and safely on a  server operating system they require systems resources to be isolated,  so that they do not attempt to access the same resources which may need  to be controlled by different mutexes, semaphores, and the events  generated. 

By default, the Redirection Engine (AAV) will not isolate any mutexes, semaphores or events, isolation will only be enabled if the  <MutexIsolation>, <EventIsolation> or  <SemaphoreIsolation> isolation tags are specified. For each <MutexName>, <EventName> or <SemaphoreName> the name referenced in the tag is redirected to a process specific name. 

Video Example: Google Earth

Only a single instance of Google Earth can run on Citrix Virtual Apps (XenApp) or RDS, watch a video to see this compatibility feature in action for mutex isolation.

    <MutexName>Global\Google Earth Google Mountain View</MutexName>

Step-by-step guide

  1. Open up AppAcceleratorV.clc
  2. Open up Redirections.xml, and create a tag for the type of system object you would like to isolate.
  3. Create the tags required for <MutexIsolation>, <EventIsolation> or <SemaphoreIsolation>
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