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POAccess denied running C# program using reference DLL from network share
 

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    <p>I am developing two projects which are both managed by ClearCase, which means that for Windows, it looks like they are located on a network share.</p> <p>The first project is a DLL written using VS 2003 in managed C++ and is intended to provide a managed interface for some legacy DLLs written in VS2003 C++.</p> <p>The second project is written in C# (.NET 3.5, VS2008) and includes the DLL generated by the first project as a reference to make use of the legacy DLLs via the wrapper.</p> <p>Now when I try to start the C# project, I get the following error message:</p> <blockquote> <p><strong>FileLoadException was unhandled</strong></p> <p>Could not load file or assembly '(my managed c++ wrapper), Version=(version number), Culture=neutral, PublicKeyToken=null' or one of its dependencies. Access is denied.</p> </blockquote> <p>Looking at the details, this is a System.Io.FileLoadException containing an inner System.UnauthorizedAccessException ("Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))"</p> <p>Now when I copy the C# project to the local hard drive, everything works fine, even if the managed C++ project stays on the network drive.</p> <p>I've had permission problems with network drives before but these vanished when upgrading to .NET 3.5 SP1. I also tried changing the Permission Set for the All_Code code group to "Full Trust" for .Net Configuration 1.1. and 2.0, as suggested on the internet, but this did not help either. Btw, I also checked if the DLL is readonly, but it isn't.</p> <p>Thanks in advance for any help!</p> <p>Update: I also tried signing both assemblies with a Strong Name and giving these keys full trust but to no avail. There must be some other reason but I am out of ideas.</p>
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