Start external process several times simultaneously

I need to start an external process (which is around 300MB large on its own) several times using System.Diagnostics.Process.

The only problem is: once the first instance starts, it generates temporary data in its base folder (where the application is located), so I can't just start another instance - it would corrupt the data of the first one and mess up everything.

I thought about temporarily copying the whole application folder programmatically, so that each instance has its own, but that doesn't feel right.

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Could anybody help me out? Thanks in advance!

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Try starting each copy in a different directory.

If the third-party app ignores the current directory, you could make a symlink to it in a different folder. I'm not necessarily recommending that, though.

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Pass an argument to your external process that specifies the temp folder to use.