If you work in a corporate with tight security rules and u need to edit the local hosts file on your Windows machine you might end up the following error:

Save failed" - "Please check whether if this file is opened in another program"

Workaround: Open Notepad++ as Administrator (“Run as administrator”) then search for hosts file in C:\Windows\System32\drivers\etc and open it.

This should fix the issue temporary

Locked Windows hosts file
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