Use Regedt32 to navigate to:
Double-click the Users value name, a data type of REG_DWORD, and change the value from 10 (Hex 0a), to Hex FFFFFFFF.
You will need to reboot the server for this change to take effect.
Note: You can not use the NFR Setup diskettes. Discard these and only use the full retail ones when performing an update or repair. If you lost these, run Winnt32 /OX or Winnt /OX from the retail server CD.
Note: You can not use a version upgrade to update an NFR version. It must be the full retail product.
Note: If you receive Evaluation Period Expires on Non-Evaluation Copy of Windows NT, see Q173507.