Performance profiler doesnt work with 64 bit dev cassini

varunaggvarunagg Posts: 3
edited January 19, 2015 10:16AM in ANTS Performance Profiler 8

It seems Performance Profiler doesn't work with 64 bit dev cassini. It gives an error stating "RedGate.Profiler.UI.ErrorTarget - Timed out waiting for port 2257 on to become available". Could you please confirm if there is any workaround or plan to support 64 bit of dev cassini?



  • Hi Varun,

    Thanks for your post!

    There aren't any issues with 64-bit Cassini that I'm aware of. Can I please check a few things that might shed some light on what's going wrong..

    -Is it .NET 4.0 Cassini? If so, do you have any problems if you just run it normally and then attach?

    -Have you tried running the profiler explicitly as administrator to rule out any permissions issues? (you'll need to press shift as you right-click to get the 'run as administrator' option from the start menu)

    -Do you get any errors in Event Viewer regarding the profiler or your application?

    Jessica Ramos | Product Support Engineer | Redgate Software

    Have you visited our Help Center?

  • Yes, it is .NET 4 Cassini. I tried attaching profiler to already running cassini process using "Attach to .NET 4+ process" but got an error "There is already a profiler attached to this process.".
    Yes, I have been running profiler as administrator.
  • Hi Varun,

    Hm I see, do you have any monitoring tools that might be automatically hooking into your application? Or have you done a profiling session with Cassini before that may have ended badly (so that the profiler was not properly 'detached')?

    Could you please:

    -Download Process Explorer if you don't have it already - ... 96653.aspx
    -Close down all instances of ANTS Performance Profiler running on your machine
    -Start your application as normal
    -Open Process Explorer, and look for the Cassini process
    -Right click on the process, click Properties and then click the Environment tab.
    -Look for the COR_ENABLE_PROFILING and COR_PROFILER variables and please let me know their values

    That will hopefully give us an idea of what's currently attached!

    Can I also check--when you get the original "Timed out waiting for port 2257 on to become available" error, are there related errors in Event Viewer?

    Jessica Ramos | Product Support Engineer | Redgate Software

    Have you visited our Help Center?

  • Just to update this, after working with Varun, we've confirmed that ANTS Performance Profiler doesn't support 64-bit versions of Cassini correctly. If this affects you, please use IIS Express (or full IIS) as a workaround.
    Dominic Smith,
    Project Manager,
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