title: Is Memory-mapped-files as ipc between uwp app and win32 process supported
body: <p>The official docs doesn't properly state if ipc via memory-mapped-files is supported in uwp. I was working on a scenario for ipc between an uwp app and its desktop extension. While I can create memory-mapped-files using <code>System.IO.MemoryMappedFiles</code> from uwp app with <code>codeGeneration</code> capability but opening from win32 process fails with message <code>Unable to find the specified file.</code>. Is ipc via memory-mapped-files supported in uwp, if yes, what is the proper way to do it??</p>
  <p><a href="https://drive.google.com/file/d/1_QGj5HncgvsrQwbc1IUUyGhHxA848_8f/view?usp=sharing" rel="nofollow noreferrer">Minimal reproduceable sample.</a></p>
  <h2>Update 1</h2>
  <p><a href="https://drive.google.com/file/d/1fDdaW8iPP5e-ihzxzzyZLDKs1GXFg4KH/view?usp=sharing" rel="nofollow noreferrer">Updated sample implementing answer from @Peter Torr - MSFT.</a></p>
  <h2>Update 2</h2>
  <p><a href="https://drive.google.com/file/d/1VkZOtuLYUP-wX_TGoqqqvs4S8uxRBIPi/view?usp=sharing" rel="nofollow noreferrer">Working sample in which memory-mapped-file created from uwp app can be read by win32 process.</a> Reading memory-mapped-file in uwp app created by win32 process still isn't working.</p>