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  ClickOnce Application "This operation is only supported on Windows 2000 SP3 or later" Error 

I have a ClickOnce app in production and a support case was opened where the ClickOnce installer was producing the following error:

"This operation is only supported on Windows 2000 SP3 or later operating systems."

The weird thing is that the computer this error was happening on was Windows XP Professional SP2. So what gives? After a lot of heartache and tears :-p the solution eventually presented itself. The app was attempting to run in compatibility mode. In the case of my ClickOnce application, I had a WinForms app that was a launcher. It would spawn an IE process and navigate to the ClickOnce install URL. On this particular machine this WinForms app was set to run in Windows 2000 compatibility mode so it was launching the IE process in the same compatibility mode.

Compatibility Mode

I have no idea how the compatibility mode was set on the WinForms app. The user of this computer does not seem capable of knowing how to set this. However, once unchecking the compatibility mode all was well again. This would likely effect any .NET application, not just a ClickOnce application. But it caused me enough grief that I had to post the solution.




                   



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Comments

  1. Melinda 4/30/2009 4:45 AM
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    What about when we slipstream IE7 to a Windows XP CD already containing SP3..

    Is the currently IE7 ( build 13 ) available in Microsoft downloads the right build to slipstream in a Windows XP SP3 CD or a newer build will be available for Windows XP SP3?
  2. Harry 5/5/2009 12:26 AM
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    Great to see you are still alive!
    How goes your 'working from home' experience?
  3. Matt 11/9/2009 3:31 PM
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    I found the same problem on a customer who had recently had a virus infestation. They had responded by installing 5 or so anti-virus programs they found randomly on the internet. I'm guessing one or more of the AV programs (or the virii I suppose) changed the setting.
  4. bhavna 3/23/2011 2:53 AM
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    spela baccarat
    I am so glad this internet thing works and your article really helped me. Might take you up on that home advice you gave. Perhaps a guest appearance would be good.
  5. xyz 5/14/2011 3:03 AM
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    Thanks lots !
    from Tokyo

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