Final answer:
To recover an unsaved Microsoft Project file, check for autosaved versions within the application, search for backup files, or use the Document Recovery feature after a system crash. Enabling the Autosave feature is also a preventive measure for the future.
Step-by-step explanation:
When you haven't saved a Microsoft Project file and you need to recover it, there are a few steps you can try. Firstly, check if the Autosave feature was enabled. If it was, there may be a version of the file that was automatically saved. To check this, click on the File tab > Info > Manage Document(s) and see if there are any versions listed under the Manage Workbook or Recover Unsaved Workbooks options.
If you didn't find anything there, another option is to search for backup files. By default, Project creates backup files at defined intervals. Search your computer for any files with the extension .mpd or .tmp that could be a backup or temporary version of your file.
Lastly, if you've had a system crash, you could use the Document Recovery feature that may appear when you restart Microsoft Project. This feature will try to recover project files that were open at the time of the crash.
Remember to regularly save your work and enable autosaving to prevent loss in future.