Find the single use registration number used

Last Published: April 25, 2020


The content in this article pertains to ArcGIS versions 8.x and 9.x only. Later versions of ArcGIS may contain different functionality, as well as different names and locations for menus, commands and geoprocessing tools.

Instructions provided describe how to find the single use registration number used.


  1. Start Windows Explorer and browse to C:\Program Files\ESRI\License\SingleUser.
  2. Open the *FX.lic file in Notepad. For example, open ViewerFX.lic to find the ArcView single use registration number.
  3. Look for the VENDOR_STRING. For example:
  1. In the above example, the ArcView Single Use registration or UNK number is UNK123456789.

Article ID:000008892

  • ArcMap 8 x
  • ArcMap 9 x

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