I had this exact problem where after some time on Windows 10, all my hosts were commented in my hosts file. As if something was crashing behind the scenes and Flywheel could not detect it. That sais, re-enabling the commented hosts was making everything working correctly. No restart were really needed.
The problem wasn’t caused by Flywheel. The problem came from BitDefender (antivirus) that is scanning the file and changing values. To solve the issue, you must disable the “Scan hosts file” feature.
