After an upgrade from whatever version to windows 10, Microsoft installs the office 365 apps. This leads to a crashing explorer (including a restart of the menu bar of the desktop).
The funny thing: If you start the word/excel/... first and then use the "open file" inside your office application everything works. The file chooser has no problem and does not freeze.
The solution is very easy:
Just deinstall the office 365 app.
All the other solutions, which are proposed in the internet do not work. Like
- Do a repair on your office application via system settings --> programs
- Disable the preview feature for the file explorer
- Disable custom shell extensions for the file explorer
- Do a clean windows reinstall (<-- this was really a tip)