If you can't open a file on your computer, don't give up right away. These tricks will give you a fighting chance of accessing or recovering its contents.

If you receive File in Use. The action can't be completed because the file is open in another program even if file is closed in another program, see this.

You can quickly access files by hitting Ctrl-Shift-P and typing “Demo” to bring up the DemoApplication.java file. Open it, and you’ll see a typical standalone Spring Boot starter app.

If you are on Windows 11, you can then select "Show More Options" and then "Open". You can skip the "Show More Options" step in Windows 10.

Free Opener truly can open a large amount of formats, including documents, spreadsheets, presentations, PDFs, media, and code. Sadly, it can’t edit most of them.