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Knowledgebase: ZBrushCore
Corrupt License File
Posted by Matthew Yetter, Last modified by Matthew Yetter on 17 May 2018 10:12 AM

Under certain circumstances, your license for ZBrushCore can become corrupted.  This will normally happen if you reinstall ZBrush on a computer, or if you update that machine's operating system (such as going from Windows 8 to Windows 10).

If you try to use ZBrushCore and are given a message that the license is corrupt, please close ZBrushCore.  Then follow these steps:

  1. Go to the ZBrushCore folder.
  2. Run the Pixologic Deactivation Manager, which you will find there.  (If you receive an side-by-side configuration error, see here.)
  3. At the lower left corner of the Deactivation Manager window, click the button to Reset.
  4. Confirm when warned that you should only do this at the instruction of Support.  This article counts as that instruction.
  5. Close the Deactivation Manager.
  6. You will now need your .zlic file again.  If you did not save a backup of it, please go to to download it.
  7. Launch ZBrushCore.
  8. You will now be prompted to reactivate ZBrushCore.  Click the button to Install your license and proceed from there like normal.