Machine Identification is Invalid for Current License (Unity 2017) (.ulf not found)

I’ve seen this problem fixed for many other people by deleting the license .ulf file located in the installation folder (program files) or in documents and settings (/Users/MyUser/AppData/Local for Windows 10), but this file is missing…

The problem appeared when I changed my Windows IP from dynamically asigned to a fixed one.

Thanks a lot in advance, I need to keep working with Unity soon :frowning:

After a while trying, just reinstalled it and now it is working again, the same screen appeared but this time I could press “Re-Activate” button, which was grayed before…

Hope this error isn’t coming again :confused:

If deleting and reinstalling the file/unity doesn’t work, check out the solution I made in this 3 minute video.