Cara Fix unity licence is invalid

Have problem about unity game engine?? Okay we have a solution for you .
-Give the steps below a try. The files may be hidden so ensure you show hidden files.

1.Uninstall Unity.

2.Delete This file:

WinXP/Vista: C:/Documents and Settings/All Users/Application Data/Pace Anti-Piracy/License Files

Win7: C:/ProgramData/PACE Anti-Piracy/License Files

Mac: HD/Library/Application Support/PACE Anti-Piracy/License Files

Windows: C:ProgramData/Unity

Mac: Library/Application Support/Unity

3.Restart

Download Unity again from the website, since your original install might be corrupt.  And download again
Click here for download unity archive

4.Reinstall and test

Notes:
If you have some problem in unity game engine,please fill comment in this post.or send your problem about unity game engine to fujiyamagames@gmail.com