Patches and updates

ArcGIS Location Referencing 10.8.1 Patch 1 (Desktop) for ArcGIS Roads and Highways

Published: March 23, 2021


This patch is to fix an issue with Calculate Route Concurrencies geoprocessing tool for ArcGIS Roads and Highways Desktop. Please download and install this patch at your earliest convenience.


Installing this Patch

  1. Login with a Windows Administrator account.

    ArcGISLocRef10.8.1Patch1Desktop.msp Checksum (Md5): 9bf8fd3545d4b8c386ab5e47febc8861
  2. Double-click the msp file to start the install process.
  3. When Setup starts, follow the instructions on your screen.


Issues Addressed with this Patch



  • BUG-000132924Calculate Route Concurrencies geoprocessing tool may produce incorrect results in lollipop routes with partial concurrencies in the loop portion.

Patch Updates

Check the Patches and Service Packs page periodically for the availability of additional patches. New information about this patch will be posted here.

How to identify which ArcGIS products are installed

To determine which ArcGIS products are installed, choose the appropriate version of the PatchFinder utility for your environment and run it from your local machine. PatchFinder will list products, hot fixes, and patches installed on your local machine.

Getting Help

Domestic sites, please contact Esri Technical Support at 1-888-377-4575, if you have any difficulty installing this patch. International sites, please contact your local Esri software distributor.

Download ID:7882

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