Linux

Permissions 0644 for '/home/<user>/.ssh/id_rsa' are too open. Windows obviously does not set the proper access rights to the files when copying them. Following an article from stackoverflow I simply set the access rights of all the files in the .ssh folder to 600. This solves the issue but is actually not better, because each file has it’s own permission for a reason. Some files are read only for security reasons, some are even changed by your ssh client and need a different permission due to that. ...

NOTE: The information on this article is mostly outdated, because there have been a lot of changes in the WSL. I would recommend to use the WSL GUI now and install all my programming related things in the WSL. Starting any application from the WSL with a GUI will now open a window in the Windows desktop. Because I am a Linux user by choice, being forced to use Windows never feels quite right. Especially when installing and configuring your development setup, Windows really feels cumbersome. ...