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ArcGIS for Desktop and ArcReader Runtime Error R6034 Patch

Published: June 24, 2016


This patch addresses the issue of certain ArcGIS applications showing a Runtime Error R6034 message.


Esri® announces the ArcGIS for Desktop and ArcReader Runtime Error R6034 Patch. This patch addresses the issue of certain ArcGIS applications showing a Runtime Error R6034 message. It deals specifically with the issue listed below under Issues Addressed with this patch.


Issues Addressed with this patch

  • BUG-000096226 - ArcGIS applications return a "Runtime Error R6034" when trying to load Python _ctypes.pyd or any other DLL that loads CRT9 without a manifest dependency entry.

    Description: Certain ArcGIS 10.4 applications show a Runtime Error R6034 message. This error may come from ArcCatalog.exe, ArcReader.exe, DesktopIndexingService.exe, or MXDDoctor.exe. It occurs most frequently when opening the Search window in ArcCatalog or when DesktopIndexingService begins to index folders in the background. The full message appears as follows:

    "Microsoft Visual C++ Runtime Library"

    Runtime Error!
    Program: C...

    An application has made an attempt to load the C runtime library incorrectly.
    Please contact the application's support team for more information.

    For more information, please see technical article "Problem: ArcGIS 10.4 applications return a "Runtime Error R6034"


Installing this patch on Windows

Installation Steps:

ArcGIS 10.4 or 10.4.1 for Desktop or ArcReader must be installed before installing this patch.

  1. Download the appropriate file to a location other than your ArcGIS installation location.

    ArcGIS 10.4 Checksum (Md5)
         ArcGIS for DesktopArcGIS-104-DT-RER-Patch.mspC9BF2BBC9CF81A9FCDD4FDECB13DDE69
    ArcGIS 10.4.1 Checksum (Md5)
         ArcGIS for Desktop ArcGIS-1041-DT-RER-Patch.msp02CD859821CCB19B35A3DE36ABD9337C
         ArcReader ArcGIS-1041-R-RER-Patch.msp4CAEC1D1BB813761103F5704D9B1ECA5

  2. Make sure you have write access to your ArcGIS installation location.

  3. Double-click ArcGIS-<Version>-<Product>-RER-Patch.msp to start the setup process.

    NOTE: If double clicking on the MSP file does not start the setup installation, you can start the setup installation manually by using the following command:

    msiexec.exe /p [location of Patch]\ArcGIS-<Version>-<Product>-RER-Patch.msp


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.

July 6, 2016: The ArcGIS 10.4 version for ArcGIS for Desktop and ArcReader are now available for download.

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 all products, hot fixes, and patches installed on your local machine.

  • PatchFinder for Windows

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:7391

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