# I tried to open the DWG in AutoCad 2020. A message showed up warning 'It made by unauthorized application'.

 1. [FAQ](/faq)
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3. [.dwg support](/faq/dwg-support)

This message indicates that the file was created with a non-Autodesk(c) software. As we are independent from Autodesk(c) this message must appear (with both regular and trial archives) as otherwise it will be a violation of the legal terms.