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

If you try to use your Pixologic software and are given a message that the license is corrupt, please close the application. Then follow the steps below.

Important: In step 3, you MUST click the "Reset" button.  Any other button will fail to clear out the corrupt license information and the error will persist.

1. With your software closed, go to the ZBrush or 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. (Recommended) Log into your account at My Licenses and request deactivation of this copy of the software. This is necessary in case the error was caused by your computer ID changing due to operating system updates. The deactivation will credit to your license immediately so that you will be able to activate again without issue.
7. Launch your copy of ZBrush or ZBrushCore.
8. You will now be prompted to reactivate. Activate again like normal, using your Pixologic ID.