Patches and updates

ArcGIS Web Adaptor (IIS) 11.1 Reliability Patch

Published: June 29, 2023


This patch has been superseded by ArcGIS Web Adaptor (IIS) 11.1 Reliability Update 2 Patch and is no longer available for download. If you installed this patch, please ensure that you also download and install the ArcGIS Web Adaptor (IIS) 11.1 Reliability Update 2 Patch.

Issues addressed with this patch

  • BUG-000159270 - When sending requests to the ArcGIS Web Adaptor (IIS), an invalid token error is given when using a token generated with a referrer that contains port 443 in the URL.
  • BUG-000158629 - ArcGIS Web Adaptor (IIS) 11.1 may stop responding to requests while under load.
  • BUG-000158105 - The ArcGIS Web Adaptor (IIS) returns http 500 errors when a request includes certain forward proxy header values for "Via".
  • BUG-000158033 - Special characters returned in the "Location" response header are not properly encoded when using the ArcGIS Web Adaptor (IIS).

Installing this patch on Windows

This patch should be installed on all ArcGIS Web Adapator (IIS) installations.

The ArcGIS product listed in the table must be installed on your system before you can install a patch. Each patch setup is specific to the ArcGIS product in the list. To determine which products are installed on your system, please see the How to identify which ArcGIS products are installed section. Esri recommends that you install the patch for each product that is on your system.

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

ArcGIS 11.1  
      ArcGIS Web Adaptor (IIS) ArcGIS-111-WAI-R-Patch.msp

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

Step 3:  Double-click ArcGIS-111-WAI-R-Patch.msp to start the setup process.

NOTE: If the machine has multiple Web Adaptors, when the patch install completes and "Finish" is clicked, the setup will automatically start again for the next Web Adaptor. The Setup will run in this manner for each Web Adaptor until the hot fix has been applied to all Web Adaptors.

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-111-WAI-R-Patch.msp

Uninstalling this patch on Windows

To uninstall this patch on Windows, open the Windows Control Panel and navigate to installed programs. Make sure that "View installed updates" (upper left side of the Programs and Features dialog) is active. Select the patch name from the programs list and click Uninstall to remove the patch.

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

PatchFinder for Linux/Unix

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