The ARR server hangs during recycling of the worker process when more than 700 web farms have Health Check configured in Windows Server 2012 R2

Symptoms
You have Application Request Routing (ARR) deployed on a server that is running Windows Server 2012 R2. When there are more than 700 web farms and when all web farms have Health Check configured, the ARR server hangs during recycling of the worker process. Additionally, a "Failed to Respond to Ping" message is logged in the event log.
Resolution

Update information

The following files are available for download from the Microsoft Download Center:


For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Prerequisites

To apply this update, you must have Application Request Router 3.0 (3.0.1952) installed.

Restart information

You may have to restart the server after you apply this update.

Replacement information

This update does not replace any previously released update.

File information

The English version of this update has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

For all supported x86-based versions of Application Request Router 3.0
File nameFile versionFile sizeDateTimePlatform
requestRouter.dll7.1.1956.0306,92807-07-201514:55x86
For all supported x64-based versions of Application Request Router 3.0
File nameFile versionFile sizeDateTimePlatform
requestRouter.dll7.1.1956.0323,82407-07-201514:55x64

Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
Learn about the terminology that Microsoft uses to describe software updates.
Properties

Article ID: 3074366 - Last Review: 08/18/2015 16:00:00 - Revision: 2.0

Windows Server 2012 R2 Datacenter

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