Delayed QueryInterface error Exception!!!

[EdgarBM]

Hi, I'm using a VC++ 6.0 ATL COM object in a .NET code. The library is registered before usign it. Everything work correctly if the library is being accessed continuously; the problem appears when it's not accessed for a while (maybe 5 minutes, it has not been completely assumed) so when it's accessed again it returns an exception of a QueryInterface error for the library interface, although the library has not been modified, neither changed or deleted...nothing! the system only has been forgotten for a while... Any suggestion or good idea?, any knowledge about it? Thank you in advance, Edgar __________________________________________ Edgar Berengena Moreno Software Engineer Appeyron Research

[John Fisher]

Is it possible that all of the .NET references to your COM object are being released in that 5 minutes? If not, have you debugged both your .NET code and the COM object to see which side actually returns the error? John :D

[leppie]

EdgarBM wrote: 5 minutes Sounds like remoting :) Well thats the timeout anyways... MyDUMeter: a .NET DUMeter clone

[EdgarBM]

Thanks, John, It's said it's a hidden bug almost solved from Microsoft. There's a hotfix still not published (Q325699) which you can ask for to Microsoft Support, but it's only available for NET english version. This bug consists of an incorrect behaviour of the garbage collector, which removes the instance of the COM objects unsued after a few time. I'll try to solve it manually until Microsoft publish the fix for my spanish version, accessing the object between short periods of times. Thank you again, Edgar __________________________________________ Edgar Berengena Moreno Software Engineer Appeyron Research

[EdgarBM]

Thanks for your interest, Leppie, It's said is a Microsoft bug (Q325699), althought it's not published, so it must be requested directly to Miscrosoft Support. Thank you again, Edgar __________________________________________ Edgar Berengena Moreno Software Engineer Appeyron Research

[leppie]

EdgarBM wrote: I'll try to solve it manually until Microsoft publish the fix for my spanish version, accessing the object between short periods of times. Another bug, another 10 things to worry about. Generally I must say that core (as in the SS CLI) .NET framework is pretty much bugfree. MyDUMeter: a .NET DUMeter clone