.odoc file: how to open it on Windows

1 Windows app registers the .odoc extension. Install one of them to open the file with a double-click.

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  Synology Drive Client

  The desktop utility that provides file syncing and personal computer backup services on multiple client computers to a centralized server, Synology Drive Server.

  Proprietary 8.2.1.20062 447.2K ↓

Related guide: Change the default app for a file type in Windows