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Asked: 2026-05-10T16:49:26+00:00

My .NET application fails when run from a network drive even when the very

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My .NET application fails when run from a network drive even when the very same executable runs perfectly fine from a local hard drive?

I tried checking for ‘Full trust’ like so:

try {     // Demand full trust permissions     PermissionSet fullTrust = new PermissionSet( PermissionState.Unrestricted );     fullTrust.Demand();      // Perform normal application logic  } catch( SecurityException ) {     // Report that permissions were not full trust     MessageBox.Show( 'This application requires full-trust security permissions to execute.' ); }

However, this isn’t helping, by which I mean the application starts up and the catch block is never entered. However, a debug build shows that the exception thrown is a SecurityException caused by an InheritanceDemand. Any ideas?

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1 Answer

  1. It indeed has to do with the fact the apps on a network location are less trusted then on your local hdd (due to the default policy of the .NET framework).

    If I’m not mistaken Microsoft finally corrected this annoyance in .NET 3.5 SP1 (after a lot of developers complaining).

    I google’d it: .NET Framework 3.5 SP1 Allows managed code to be launched from a network share!

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