I have a .NET application that is meant to be run on a local

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Asked: May 10, 20262026-05-10T16:42:13+00:00 2026-05-10T16:42:13+00:00

I have a .NET application that is meant to be run on a local PC and started from a file share on the LAN.

It works fine on 32 bit Windows XP and Vista workstations.

But it fails with a System.InvalidOperationException on 64 bit Windows Server 2008.

It runs fine locally on all three configurations.

What could be the cause?

.NET 2.0 is installed an all machines involved.

Summary:

32 bit XP: runs locally and remotely 32 bit Vista: runs locally and remotely 64 bit 2008: runs locally, fails remotely

‘remotely’ means running locally but launched from a file share rather than a local drive.

Zone security is set to ‘full trust’ for ‘Local Intranet’ on all machines involved including the 64 bit 2008 machine.

Any ideas?

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score 0 · Answer 1 · 2026-05-10T16:42:14+00:00

Are the projects set to run in x86 mode? Use the configuration Manager to check.

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